# Service bulletin 1806320

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.

- Type: Service bulletin
- NHTSA id: 10224095
- Published by NHTSA: 2022\-10\-17
- Manufacturer's number: 1806320
- Manufacturer's date: 2020\-11\-20
- NHTSA component: AIR BAGS; BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\):P20EE\-00 \- SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent. Customers may also describe the following condition:Engine Start/Stop inoperative. Remote start inoperative\(South Korea vehicles only\). Incorrect vehicle speed reported by the cluster when the driver changes the speed units. Undesirable pedal response in 4\-LO mode. Selective Catalytic Reduction \(SCR\) system fault codes logged at higher vehicle speeds. Alternator load protection at idle. Check Engine Lamp or low battery indicator

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10224095-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10224095-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Air bags, Driver assistance, Electrical system, Lighting, Backup camera

## Trouble codes named

P20EE, P24B2

## Vehicles listed

- 2019 JEEP CHEROKEE

## Other bulletins for the same vehicles and component

- [S2208000045 REV.B](/bulletins/11011774.md), 2024-12-11, Service bulletin: BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING. Backup Camera Poor Image Quality Inspection
- [9003357](/bulletins/10247905.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION. ADAPTER, Engine Oil Filter \(Pentastar V6\) For all 2014MY replace the Oil Filter Adapter \(OFA\). For any other MY \(with mileage above 30,000\) review and follow instructions from STAR Online S1809000007 REV. C available on Dealer Connect. Also, consider the following: 1\) Remove OFA 2\) Replace only the oil inlet O\-ring and gaskets \(seals kit in SOL above\). 3\) Re\-install the OFA. For 2023MY and beyond use black O\-ring. For 2022MY and prior use red O\-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
- [08\-038\-23](/bulletins/10231815.md), 2023-02-13, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Radio Over The Air JR34.3 Updating to JR34.32.Software Version Customers may experience one or more of the following: Not be able to use Mobile Wi\-Fi upon start up. Hotspot gives a no Internet connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from JR34.3 to JR34.32. NOTE: National launch for this FOTA update is expected to begin February 20, 2023.
- [0809321](/bulletins/10230134.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM; BACK OVER PREVENTION. UAS, UAQ, UCS, UAV, UCV and UCQ Radio Over The Air Software Version Updates This bulletin provides information regarding the latest Flash Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. This is part of a two step FOTA update, first update brings software level to 22.61 and this second FOTA update will take the software to 22.64. National launch for this second step is May 24, 2021. Customers may experience one or more of the following:Navigation is incorrect or can not calculate route. GPS locations is inaccurate. Uconnect radio apps are all inoperable. Backup camera screen is blue \(DT and KL\). Green horizontal lines appear across screen \(DT and KL\). Anti\-theft code request message. Backup camera screen is blank. Lines appear across screen. Radio control screen is blank or locked. Radio reset intermittently. Unable to adjust audio volume. Unable to switch modes between AM, FM, SAT or Media. In addition the following enhancements are included in this update:Carplay® connectivity improvement. Improvement to Bluetooth® phone pairing. Bluetooth devices unresponsive. Improved sound quality when using a Bluetooth phone.
- [08\-003\-22 REV. A](/bulletins/10229816.md), 2023-01-17, Service bulletin: STEERING; EQUIPMENT:ELECTRICAL:INFOTAINMENT; BACK OVER PREVENTION. UAQ and UCQ Radio Enhancements Customers may experience one or more of the following: ? \*\*Wi\-Fi hotspot connection failure. ? Speaker popping, crackle noise during Voice Recognition \(VR\) response and navigation guidance. ? Mobile Station Integrated Services Digital Network \(MSISDN\) missing from radio, no connected services working.\*\* ? Intermittent, black radio display screen \(Rear View Camera \(RVC\) not affected\). ? Intermittent, radio freezes \(RVC not affected\). ? Wireless connectivity pairing and/or connection issues. ? Lost radio presets. ? Radio channels change by itself. ? SXMT icon inoperative. ? SXMT favorite song not displaying/playing. ? Incorrect navigation address/location/directions. ? Backup camera has black display screen or only displays Check Entire Surroundings with black screen \(occurs when vehicle is shifted immediately to reverse upon key\-on before RVC signal is received, recoverable with key cycle\) . ? High pitch chime noise. ? Contact list not loading. ? Device not supported message. ? Remote app inoperative. ? Travel\-Link fuel price incorrect. ? Backup camera gridlines missing. ? Unable to adjust volume. In addition, the following enhancement are included in this update: ? Enables map updates. ? Heavy Duty \(HD\) Truck USB HUB improvements. ? HD Truck heated steering wheel improvements This bulletin involves inspecting and if required, updating the radio software level to 40.1. Depending on the radio?s current software level the radio may need a one or two USB update.
- [18\-161\-22](/bulletins/10229791.md), 2023-01-17, 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.
- [S2218000023](/bulletins/10229769.md), 2023-01-17, Service bulletin: EXTERIOR LIGHTING; BACK OVER PREVENTION. Malfunction Indicator Lamp \(MIL\) Illuminated. Diagnostic Trouble Code \(DTC\) U02A3 ? Lost Communication ith Particulate Matter \(PM\) Sensor, Set After PM Sensor Replacement.
- [1805220](/bulletins/10229327.md), 2023-01-09, 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.
- [1807722](/bulletins/10228033.md), 2022-12-19, 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
- [1808420REVA](/bulletins/10223954.md), 2022-10-17, 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

JSON: [/v1/bulletins/10224095](/v1/bulletins/10224095)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%201806320&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10224095&vehicle=Service%20bulletin%201806320)