# Service bulletin 18\-050\-20

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: 10176592
- Published by NHTSA: 2020\-06\-22
- Manufacturer's number: 18\-050\-20
- Manufacturer's date: 2020\-05\-30
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM

## NHTSA's summary

Powertrain Control Module \(PCM\) Replacement \- P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\) This bulletin involves replacing the Powertrain Control Module \(PCM\) and re\-programming with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Code \(DTC\) set in the PCM memory:P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176592-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176592-9999.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

P2172

## Vehicles listed

- 2019 DODGE CHALLENGER
- 2019 DODGE CHARGER
- 2019 JEEP GRAND CHEROKEE

## Other bulletins for the same vehicles and component

- [1810023](/bulletins/10248615.md), 2024-01-08, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTCs\) has been set: ?\*\*P0441 \- EVAP Purge System Performance \(for North America and Mexico markets only\).\*\* ? P0456 \- EVAP System Small Leak. NOTE: \*\* If DTC P0456 is present, use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. \*\* This bulletin involves reprogramming the PCM with the latest available software.
- [1810023](/bulletins/10244454.md), 2023-10-30, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTCs\) has been set: ?\*\*P0441 \- EVAP Purge System Performance \(for North America and Mexico markets only\).\*\* ? P0456 \- EVAP System Small Leak. NOTE: \*\* If DTC P0456 is present, use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. \*\* This bulletin involves reprogramming the PCM with the latest available software.
- [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
- [1815022](/bulletins/10230549.md), 2023-01-23, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Powertrain Control Module \(PCM\) Updates
- [1807422](/bulletins/10228027.md), 2022-12-19, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; EXTERIOR LIGHTING; BACK OVER PREVENTION; ELECTRICAL SYSTEM:WIRING:POSITION/LIMIT SENSOR/SWITCH; 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 moreof the following DTCs have been set: P0452 \- EVAP Pressure Switch Stuck Closed. P0455 \- EVAP System Large Leak. P0440 \- General EVAP System Failure. P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak VerificationTest \(SLVT\) to determine if a leak is present in the system. Customers may also comment on one or more of the following: Vehicle will fail to start when cold at times. Noise heard from the drivetrain while stationary and vehicle is in Sport/Track modes.
- [1806422](/bulletins/10223211.md), 2022-10-17, 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 a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or moreof the following DTCs have been set: P0452 \- EVAP Pressure Switch Stuck Closed. P0455 \- EVAP System Large Leak. P0440 \- General EVAP System Failure. 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. Customers may also experience the following:Vehicle willfail to start when cold at times. Noise heard from the drivetrain while stationary and vehicle is in Sport/Trackmodes. Extended engine crank times.
- [S1508000323REVA](/bulletins/10220872.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). PCM Sets DTC P1400\-Aftermarket Calibration Detected/Warranty Coverage Confirmation Required
- [1806422](/bulletins/10220829.md), 2022-09-26, Service bulletin: ENGINE AND ENGINE COOLING; 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 moreof the following DTCs have been set: P0452 \- EVAP Pressure Switch Stuck Closed. P0455 \- EVAP System Large Leak. P0440 \- General EVAP System Failure. 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. Customers may also experience the following:Vehicle willfail to start when cold at times. Noise heard from the drivetrain while stationary and vehicle is in Sport/Trackmodes. Extended engine crank times.
- [1806622](/bulletins/10220828.md), 2022-09-26, 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 that one or moreof the following DTCs have been set: P0452 \- EVAP Pressure Switch Stuck Closed. P0455 \- EVAP System Large Leak. P0440 \- General EVAP System Failure. 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. Customers may also experience one or more of the following: Vehicle will fail to start when cold at times. Noise heard from the drivetrain while stationary and vehicle is in Sport/Trackmodes. Extended engine crank times.
- [S1925000008](/bulletins/10214560.md), 2022-06-27, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Malfunction Indicator Lamp \(MIL\) Illumination. Diagnostic Trouble Codes \(DTCs\) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.

JSON: [/v1/bulletins/10176592](/v1/bulletins/10176592)

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