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Service bulletin 21-025-25 REV. A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11021839
Published by NHTSA2025-08-13
Manufacturer's number21-025-25 REV. A
Manufacturer's date2025-08-08
NHTSA componentPOWER TRAIN

NHTSA's summary

Internal Transmission Wiring Connector Short and Motor A Bearing Failure Warranty Extension XE1 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0A3F - Drive Motor A Position Sensor 1 Circuit. ● P0A43 - Drive Motor A Position Sensor Circuit Intermittent. ● P0A45 - Drive Motor B Position Sensor 1 Circuit. ● P0C1A - Drive Motor B Torque Delivered Performance. Customers may also comment on the following: ● Vehicle is in limp mode. NOTE: Module flashes are also required for this Repair Procedure to be effective, the following modules are to be updated: ● Hybrid Control Processor (HCP). ● Auxiliary Hybrid Control Processor (AHCP) also known as the Power Inverter Module (PIM). This bulletin involves servicing the transmission.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P0A3F, P0A43, P0A45, P0C1A

Vehicles listed
CHRYSLER PACIFICA PLUG-IN HYBRID2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20184222018-08-09. Powertrain
20183932018-07-27. Powertrain
18V4930002018-07-26. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT
18V4920002018-07-26. POWER TRAIN:AUTOMATIC TRANSMISSION
20183232018-06-15. Powertrain
17V4820002017-07-28. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
20173012017-06-12. Powertrain

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
44D Combo2026-07-02. Warranty extension. Emissions Recall 44D - Hybrid Control Module Software - Dealer Notification Hybrid Control Processor (HCP) on about 69,189 of the above vehicles may have software that does not correctly report On-Board Diagnostic (OBD) legislated Integrated Dual Charging Module (IDCM) diagnostic information. The HCP is required to store OBD legislated Diagnostic Trouble Codes (DTC's) and command the malfunction indicator light (MIL) on behalf of the IDCM.
18-027-262026-03-05. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, SYMPTOM: a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● **P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.** ● U0418-00 - Implausible Data Received From Brake System Control Module 1. ● P061A - Level 2 Torque Performance. Customers may also experience one or more of the following: ● **Engine Stop/Start (ESS) is inoperable.** ● Battery depletes. ● Rough shifting while driving. ● Driveline bumps and rumbles when lightly applying the accelerator pedal in traffic or at other low vehicle speeds such as parking lot maneuvers. ● Transmission hard upshifts, rough/bump during low gear 1-2 and 2-3 at 40-64 kph (25-40 mph). This bulletin involves reprogramming the PCM with the latest available software.
18-026-262026-03-05. Service bulletin. Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **P152F – Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.** **Customers may also comment on one or more of the following:** ● **Engine Start/Stop feature is inoperable.** ● Battery depletes. ● Rough shifting while driving. ● Poor vehicle response and drop in engine speed when making light changes to the accelerator pedal position. ● Drop in engine speed when in 5th gear and decelerating. ● Engine RPM drops during the coast down or braking. This bulletin involves reprogramming the PCM with the latest available software.
1099972026-02-12. Service bulletin. ACTUATOR - TRANSFER CASE
21-014-262026-02-12. Service bulletin. Internal Transmission Wiring Connector Short And **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. ● P0A43-00 - Drive Motor A Position Sensor Circuit Intermittent. ● P0A45-00 - Drive Motor B Position Sensor 1 Circuit. ● P0C1A-00 - Drive Motor B Torque Delivered Performance. Customers may also comment on the following: ● Vehicle is in limp mode.** statement, Claims Data tables,
18-095-252025-11-19. Service bulletin. Flash: Powertrain Control Module (PCM) Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.** Customers may experience one of the following: ● **A low battery state of charge and/or dead battery. ● Engine Stop/Start inoperable.** ● Vehicle may enter “Auto Park Mode” during an Engine Stop Start (ESS) event. The driver will be notified that the vehicle is entering “Auto Park Mode” by the blinking D on the shifter for three blinks and then automatically shifting into Park. NOTE: **To shift out of Park, the driver will have to press down on the brake pedal and cycle the ignition back to START, and move the shifter into the desired position.** This bulletin involves reprogramming the PCM with the latest available software.
21-040-252025-10-08. Service bulletin. 948TE Transmission Reaction Shaft Service Bushing Kit Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1DB7-00 - Torque Converter Clutch Performance.
S25230000502025-05-28. Service bulletin. Vibration From Engine Or Powertrain. Powertrain Mounting Neutralization Procedure. Discussion: Service information is in the process of being updated to include powertrain mount installation best practices. The new procedure will neutralize the mounts to lessen or remove unwanted mount tension that can lead to vibration complaints.
21-025-252025-03-25. Service bulletin. "Internal Transmission Wiring Connector Short and Motor A Bearing Failure Warranty Extension XE1 : Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0A3F - Drive Motor A Position Sensor 1 Circuit. ● P0A43 - Drive Motor A Position Sensor Circuit Intermittent. ● P0A45 - Drive Motor B Position Sensor 1 Circuit. ● P0C1A - Drive Motor B Torque Delivered Performance. Customers may also comment on the following: ● Vehicle is in limp mode. NOTE: Module flashes are also required for this Repair Procedure to be effective, the following modules are to be updated: ● Hybrid Control Processor (HCP). ● Auxiliary Hybrid Control Processor (AHCP) also known as the Power Inverter Module (PIM). REPAIR SUMMARY: **This bulletin involves servicing the transmission.**"
1040942025-03-24. Service bulletin. ID-23-07 Rev. B (XE1) eFlite Si-eVT Transmission Repair – Certain 2017 - 2023 Chrysler Pacifica (RU)