# Service bulletin 1803721

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: 10221194
- Published by NHTSA: 2022\-09\-26
- Manufacturer's number: 1803721
- Manufacturer's date: 2021\-04\-15
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ELECTRICAL SYSTEM

## NHTSA's summary

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 that one or more of the following DTCs have been set:P02EE \- Cylinder 1 Injector Circuit Performance\(APAC, EMEA and LATAM Only\). P02EF \- Cylinder 2 Injector Circuit Performance\(APAC, EMEA and LATAM Only\). P02F0 \- Cylinder 3 Injector Circuit Performance\(APAC, EMEA and LATAM Only\). P02F1 \- Cylinder 4 Injector Circuit Performance\(APAC, EMEA and LATAM Only\). P012A \- Turbocharger/Supercharger Inlet Pressure Sensor 1\(APAC, EMEA and LATAM Only\). P012C \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low\(APAC, EMEA and LATAM Only\). P012D \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High\(APAC, EMEA and LATAM Only\). P2C90 \- Crankcase Ventilation System \- Hose "A" Disconnected\(APAC, EMEA and LATAM Only\). P06EF \- Engine Restart Performance. P04FC \- Crankcase Ventilation System Performance. P050B \- Cold Start Ignition Timing Performance. P0128 \- Thermostat Rationality. P0456 \- EVAP System Small Leak. If DTC P0456 is present, use the wiTECH Small Leak Verification Test \(SLVT\) to determine if there is a leak in the system. The following software enhancement is also available in this update:Enable soot retention for vehicles equipped with Gasoline Particulate Filter \(GPF\). Technicians may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool\(APAC Only\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10221194-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10221194-9999.pdf)

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

## Components

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

## Trouble codes named

P0128, P012A, P012C, P012D, P02EE, P02EF, P02F0, P02F1, P0456, P04FC, P050B, P06EF, P2C90

## Vehicles listed

- 2019 JEEP WRANGLER

## Other bulletins for the same vehicles and component

- [S2325000006](/bulletins/10241022.md), 2023-08-21, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint may include a MIL\-on or check engine lamp on condition.
- [S1808000152](/bulletins/10234438.md), 2023-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). CEL \(Check Engine Lamp\) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes \(DTCs\) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042\-54 Brake Pedal Missing Calibration
- [S2207000002](/bulletins/10229470.md), 2023-01-09, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS; UNKNOWN OR OTHER. Coolant leak
- [1802220](/bulletins/10224078.md), 2022-10-17, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; 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. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more ofthe following DTCs:P012A \- Turbocharger/Supercharger Inlet Pressure Sensor 1. P012C \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low. P012D \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High. P0607 \- ECU Internal Performance. P06EF \- Engine Restart Performance. P050B \- Cold Start Ignition Timing 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. P0128 \- Thermostat Rationality. P0507 \- Idle Speed Performance Higher Than Expected. Customers may also describe the following condition:Excessive radiator fan noise when the A/C is on MAX output. In addition, the following software enhancements are available:Electric Vacuum Pump \(EVP\) update. Fan noise reduction.
- [1802120](/bulletins/10223592.md), 2022-10-17, 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 that one or more of the following DTCs have been set:P012A \- Turbocharger/Supercharger Inlet Pressure Sensor 1\(APAC, EMEA and LATAM Only\). P012C \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low\(APAC, EMEA and LATAM Only\). P012D \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High\(APAC, EMEA and LATAM Only\). P2C90 \- Crankcase Ventilation System \- Hose "A" Disconnected\(APAC, EMEA and LATAM Only\). P06EF \- Engine Restart Performance. P04FC \- Crankcase Ventilation System Performance. P050B \- Cold Start Ignition Timing Performance. P0128 \- Thermostat Rationality. P0456 \- EVAP System Small Leak. If DTC P0456 is present, use the wiTECH Small Leak Verification Test \(SLVT\) to determine if there is a leak in the system. The following software enhancement is also available in this update:Enable soot retention for vehicles equipped with Gasoline Particulate Filter \(GPF\). Technicians may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool\(APAC Only\).
- [S1918000008 Rev.](/bulletins/10215854.md), 2022-07-18, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer?s complaint may include a MIL\-on with one or more of the following DTCs \(Active, Pending, or Stored\) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 \(Bank 1 downstream\) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routines for the above codes, check for the condition listed above.
- [S2018000012](/bulletins/10184702.md), 2020-12-28, Service bulletin: ELECTRICAL SYSTEM; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Check engine lamp on. Fault code P0244\- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module \(PCM a.k.a. ECM\) after the turbocharger assembly has been replaced.
- [18\-022\-20 REV. A](/bulletins/10184456.md), 2020-12-21, Service bulletin: ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; ENGINE; 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. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more ofthe following DTCs:P012A \- Turbocharger/Supercharger Inlet Pressure Sensor 1. P012C \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low. P012D \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High. P0607 \- ECU Internal Performance. P06EF \- Engine Restart Performance. P050B \- Cold Start Ignition Timing 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. P0128 \- Thermostat Rationality. P0507 \- Idle Speed Performance Higher Than Expected. Customers may also describe the following condition:Excessive radiator fan noise when the A/C is on MAX output. In addition, the following software enhancements are available:Electric Vacuum Pump \(EVP\) update. Fan noise reduction.
- [S2018000012](/bulletins/10184402.md), 2020-12-21, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Check engine lamp on. Fault code P0244\- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module \(PCM a.k.a. ECM\) after the turbocharger assembly has been replaced.
- [18\-021\-20 REV. A](/bulletins/10177537.md), 2020-07-27, Service bulletin: ELECTRICAL SYSTEM; 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 that one or more of the following DTCs have been set:P012A \- Turbocharger/Supercharger Inlet Pressure Sensor 1\(APAC, EMEA and LATAM Only\). P012C \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low\(APAC, EMEA and LATAM Only\). P012D \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High\(APAC, EMEA and LATAM Only\). P2C90 \- Crankcase Ventilation System \- Hose "A" Disconnected\(APAC, EMEA and LATAM Only\). P06EF \- Engine Restart Performance. P04FC \- Crankcase Ventilation System Performance. P050B \- Cold Start Ignition Timing Performance. P0128 \- Thermostat Rationality. P0456 \- EVAP System Small Leak. If DTC P0456 is present, use the wiTECH Small Leak Verification Test \(SLVT\) to determine if there is a leak in the system. The following software enhancement is also available in this update:Enable soot retention for vehicles equipped with Gasoline Particulate Filter \(GPF\). Technicians may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool\(APAC Only\).

JSON: [/v1/bulletins/10221194](/v1/bulletins/10221194)

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