# Service bulletin 1812022

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: 10221502
- Published by NHTSA: 2022\-09\-26
- Manufacturer's number: 1812022
- Manufacturer's date: 2022\-06\-23
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## 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 one or more ofthe following DTCs have been set: P1D83 \- Implausible Engine Oil Temperature Signal Received. U0418 Implausible Data Received From Brake System Control Module. DTC U0418 can be set erroneously due to a low battery \(below 10 volts\).Customers may experience the following: An audible clunk after applying throttle from a coasting condition, predominantlyin fifth and sixth gear while driving 48 \- 72 kph \(30 \- 45 mph\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10221502-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10221502-9999.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

P1D83, U0418

## Vehicles listed

- 2021 JEEP CHEROKEE

## Recalls for the same vehicles and component

- [21V310000](/recalls/nhtsa/21V310000.md), 2021-05-04: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS

## Other bulletins for the same vehicles and component

- [1807822](/bulletins/10228030.md), 2022-12-19, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); PARKING BRAKE:ELECTRICAL:CONTROL MODULE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; EXTERIOR LIGHTING; 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 the following DiagnosticTrouble Code \(DTC\): U0418 \- Implausible Data Received From Brake System Control Module. DTC U0418 can be set erroneously due to a low battery \(below 10 volts\).
- [1807322](/bulletins/10228029.md), 2022-12-19, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; EXTERIOR LIGHTING; UNKNOWN OR OTHER. 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 \(DTCs\) have been set: P2097 \- Downstream Fuel Trim System 1 Rich. P2099 \- Downstream Fuel Trim System 2 Rich.
- [S2125000002](/bulletins/10221288.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [18\-078\-22](/bulletins/10214622.md), 2022-06-27, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; 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 ofthe following DTCs have been set: P0031 \- O2 Sensor 1/1 Heater Circuit Low. U0418 \- Implausible Data Received From Brake System Control Module. DTC U0418 can be set erroneously due to a low battery \(below 10 volts\).
- [S2125000002](/bulletins/10212447.md), 2022-05-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [18\-101\-20 REV. A](/bulletins/10187703.md), 2021-03-01, Service bulletin: 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 the following:An audible clunk after applying throttle from a coasting condition, predominantly in fifth and sixth gear while driving 48 \- 72 kph \(30 \- 45 mph\).
- [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.
- [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\-101\-20](/bulletins/10183085.md), 2020-11-30, Service bulletin: 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 the following:An audible clunk after applying throttle from a coasting condition, predominantly in fifth and sixth gear while driving 48 \- 72 kph \(30 \- 45 mph\).

JSON: [/v1/bulletins/10221502](/v1/bulletins/10221502)

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