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Service bulletins for the 2019 Jeep Cherokee

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

407 on file from NHTSA, as of 2026-10-19.

About C1252 on the 2019 Jeep Cherokee: what the code means, and the bulletins and recalls about the same components.

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By trouble code

Only bulletins with trouble code: C1252 are shown. Show all

Bulletins, newest first
S1805000006 REV.B2025-11-13. Service bulletin. SERVICE BRAKES. ESC Light Illuminated. DTC C1252-92 VACUUM PUMP CONTROL CIRCUIT And Or P258B ELECTRONIC VACUUM PUMP PERFORMANCE
18-161-222023-01-17. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION; VEHICLE SPEED CONTROL; EXTERIOR LIGHTING. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or moreof the following DTCs have been set: P02EE - Cylinder 1 Injector Circuit Performance. P02EF - Cylinder 2 Injector Circuit Performance. P02F0 - Cylinder 3 Injector Circuit Performance. P02F1 - Cylinder 4 Injector Circuit Performance. P2C90 - Crankcase Ventilation System - Hose "A" Disconnected. P1D73 - AGS performance fault. P04FC - Crankcase Ventilation System Performance. P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation(Enlarged Europe and Middle East/Africa) only equipped with Gas ParticulateFilter (GPF))(DTC will set when driving above 72 kph (45 mph). P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. P050B - Cold Start Ignition Timing Performance. P258B - Electric Vacuum Pump Performance. C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P2B95 - Cold Start Injection Pulse Performance. P062A - Fuel Pump Control Performance. P058C - Battery Monitor Module Temperature Monitoring Performance. P0607 - ECU Internal Performance. Injector performance faults for cylinders 2 - 4 map to DTC for incorrect cylinders. In addition the following software enhancement are included: AGS stuck condition (The customer won't see an issue, but this calibrationallows AGS performance fault - P1D73, to work correctly). Software corrects an issue with the wrong cylinder identification if an injectorcircuit performance fault is set in the PCM: If any of the series of injector control circuit faults are set, please refer tothe bullet-pointed list below to determine which injector to address.
18052202023-01-09. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING; EXTERIOR LIGHTING; VEHICLE SPEED CONTROL. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following DTCs have been set:P04FC - Crankcase Ventilation System Performance. P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation(EMEA only equipped with Gas Particulate Filter (GPF))(DTC will set when driving above 72 kph (45 mph). P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. P050B - Cold Start Ignition Timing Performance. P258B - Electric Vacuum Pump Performance. C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P2B95 - Cold Start Injection Pulse Performance. P062A - Fuel Pump Control Performance. P058C - Battery Monitor Module Temperature Monitoring Performance. P0607 - ECU Internal Performance. Injector performance faults for cylinders 2 - 4 map to DTC for incorrect cylinders. In addition the following software enhancement are included:Software corrects an issue with the wrong cylinder identification if an injector circuit performance fault is set in the PCM:If any of the series of injector control circuit faults are set, please refer to the bullet-pointed list below to determine which injector to address.For reference, the correct injector circuit performance faults are listed below:P02EE - Cylinder 1 Injector Circuit Performance. P02EF - Cylinder 2 Injector Circuit Performance. P02F0 - Cylinder 3 Injector Circuit Performance. P02F1 - Cylinder 4 Injector Circuit Performance. Customers may also experience the following condition:Audible noise from the Low Temperature Radiator (LTR) coolant pump, at low speeds. Abnormal noise from the radiator cooling fan. LTR runs too long after the engine is turned off.
18077222022-12-19. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING; AIR BAGS; PARKING BRAKE:ELECTRICAL; VEHICLE SPEED CONTROL; BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs: P1D83 - Implausible Engine Oil Temperature Signal Received. P2610 - PCM Internal Engine Off Timer Performance. P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit P0616 - Starter Control Circuit Lo. - Starter Control Circuit High. P0607 - ECU Internal Performance
1808420REVA2022-10-17. Service bulletin. BACK OVER PREVENTION; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; SERVICE BRAKES; FUEL SYSTEM, GASOLINE; VEHICLE SPEED CONTROL; AIR BAGS. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:P2610 - PCM Internal Engine Off Timer Performance. P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High. P0607 - ECU Internal Performance. P3032 - Barometric Pressure Sensor Performance
18052202022-09-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following DTCs have been set:P04FC - Crankcase Ventilation System Performance. P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation(EMEA only equipped with Gas Particulate Filter (GPF))(DTC will set when driving above 72 kph (45 mph). P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. P050B - Cold Start Ignition Timing Performance. P258B - Electric Vacuum Pump Performance. C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P2B95 - Cold Start Injection Pulse Performance. P062A - Fuel Pump Control Performance. P058C - Battery Monitor Module Temperature Monitoring Performance. P0607 - ECU Internal Performance. Injector performance faults for cylinders 2 - 4 map to DTC for incorrect cylinders. In addition the following software enhancement are included:Software corrects an issue with the wrong cylinder identification if an injector circuit performance fault is set in the PCM:If any of the series of injector control circuit faults are set, please refer to the bullet-pointed list below to determine which injector to address.For reference, the correct injector circuit performance faults are listed below:P02EE - Cylinder 1 Injector Circuit Performance. P02EF - Cylinder 2 Injector Circuit Performance. P02F0 - Cylinder 3 Injector Circuit Performance. P02F1 - Cylinder 4 Injector Circuit Performance. Customers may also experience the following condition:Audible noise from the Low Temperature Radiator (LTR) coolant pump, at low speeds. Abnormal noise from the radiator cooling fan. LTR runs too long after the engine is turned off.
18020212022-09-26. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL; BACK OVER PREVENTION; AIR BAGS; SERVICE BRAKES, HYDRAULIC; EXTERIOR LIGHTING. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):P2610 - PCM Internal Engine Off Timer Performance. P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High.P0607 - ECU Internal Performance.
18023192022-09-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High. P0607 - ECU Internal Performance. P3032 - Barometric Pressure Sensor Performance Plausibility.
18-020-212021-03-15. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):P2610 - PCM Internal Engine Off Timer Performance. P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High.P0607 - ECU Internal Performance.
18-084-20 REV. A2020-11-30. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:P2610 - PCM Internal Engine Off Timer Performance. P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High. P0607 - ECU Internal Performance. P3032 - Barometric Pressure Sensor Performance
18-084-202020-10-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High. P0607 - ECU Internal Performance. P3032 - Barometric Pressure Sensor Performance Plausibility.
18-052-202020-08-24. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following DTCs have been set:P04FC - Crankcase Ventilation System Performance. P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation(EMEA only equipped with Gas Particulate Filter (GPF))(DTC will set when driving above 72 kph (45 mph). P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. P050B - Cold Start Ignition Timing Performance. P258B - Electric Vacuum Pump Performance. C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P2B95 - Cold Start Injection Pulse Performance. P062A - Fuel Pump Control Performance. P058C - Battery Monitor Module Temperature Monitoring Performance. P0607 - ECU Internal Performance. Injector performance faults for cylinders 2 - 4 map to DTC for incorrect cylinders. In addition the following software enhancement are included:Software corrects an issue with the wrong cylinder identification if an injector circuit performance fault is set in the PCM:If any of the series of injector control circuit faults are set, please refer to the bullet-pointed list below to determine which injector to address.For reference, the correct injector circuit performance faults are listed below:P02EE - Cylinder 1 Injector Circuit Performance. P02EF - Cylinder 2 Injector Circuit Performance. P02F0 - Cylinder 3 Injector Circuit Performance. P02F1 - Cylinder 4 Injector Circuit Performance. Customers may also experience the following condition:Audible noise from the Low Temperature Radiator (LTR) coolant pump, at low speeds. Abnormal noise from the radiator cooling fan. LTR runs too long after the engine is turned off.
18-047-202020-06-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following DTCs:P2610 - PCM Internal Engine Off Timer Performance. P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High. P0607 - ECU Internal Performance. P3032 - Barometric Pressure Sensor Performance
S18050000062020-04-06. Service bulletin. ELECTRICAL SYSTEM. ESC Light Illuminated. DTC C1252-92 VACUUM PUMP CONTROL CIRCUIT And Or P258B ELECTRONIC VACUUM PUMP PERFORMANCE
18-023-19 REV. B2019-12-16. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. C1252 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P06DA - Engine Oil Pressure Control Circuit. P06DD - Engine Oil Pressure Control Circuit Stuck Off. P06DE - Engine Oil Pressure Control Circuit Stuck On. B25C7 - Driver Door Ajar Switch 2 Circuit Low. B25C8 - Driver Door Ajar Switch 2 Circuit High. B25C9 - Driver Door Ajar Switch 2 Stuck Closed. B25CB - Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 - Electronic Park Brake Module Deactivated. P0EA5 - DC/DC Converter 2 Performance. P0EA6 - DC/DC Converter 2 Over Temperature. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 - Lost Communication With Park Brake Control Module. U0151 - Lost Communication With Occupant Restraint Controller. U0416 - Implausible Data Received From Esp. U0418 - Implausible Data Received From Brake System Control Module 1. U0599 - Invalid Data Received From DC to DC Converter Control Module "A". U0299 - LOC With DC-DC Convertor 2. U1409 - Implausible LF WSS Received. U140A - Implausible RF WSS Received. U059A - Invalid Data Received From DC to DC Converter Control Module "B". C0542 - Brake Pressure Sensor 2 Circuit Low. C0543 - Brake Pressure Sensor 2 Circuit High. P258A - Electric Vacuum Pump Circuit (turn MIL off, switch to 1 trip fault). P0616 - Starter Control Circuit Low. P0617 - Starter Control Circuit High. P0607 - ECU Internal Performance. P3032 - Barometric Pressure Sensor Performance Plausibility.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.