Service bulletin 18-054-17 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)
Type	Service bulletin
NHTSA id	10219897
Published by NHTSA	2022-09-15
Manufacturer's number	18-054-17 REV. A
Manufacturer's date	2017-06-17
NHTSA component	POWER TRAIN

NHTSA's summary

Flash: Powertrain Diagnostic and System Enhancements 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, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:U1431 - Implausible Data Received From Cruise Control Module.P24B9 - EVAP System Leak Detection Pump Pressure Sensor Circuit Range/Performance. P0300 - Multiple Cylinder Misfire. P1C64-00 - Hybrid Perf Engine Speed Below Target During Autostart.

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

P0300, P1C64, P24B9, U1431

Vehicles listed
CHRYSLER PACIFICA	2017
CHRYSLER PACIFICA PLUG-IN HYBRID	2017 (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
2018323	2018-06-15. Powertrain
17V482000	2017-07-28. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
2017301	2017-06-12. 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
21-014-26	2026-02-12. 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,
21-040-25	2025-10-08. 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.
21-025-25 REV. A	2025-08-13. 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). This bulletin involves servicing the transmission.
S2523000050	2025-05-28. 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.
21-025-25	2025-03-25. 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."
104094	2025-03-24. Service bulletin. ID-23-07 Rev. B (XE1) eFlite Si-eVT Transmission Repair – Certain 2017 - 2023 Chrysler Pacifica (RU)
104093	2025-03-19. Warranty extension. D-23-07 Rev. B (XE1) eFlite Si-eVT Transmission Repair – Certain 2017 - 2023 Chrysler Pacifica (RU)
21-001-25	2025-01-14. Service bulletin. "Internal Transmission Wiring Connector Short Warranty Extension XN1 This bulletin involves replacing the transmission. 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. 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 "
21-042-24	2024-06-18. 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). This bulletin involves replacing the transmission."
98746	2024-06-13. Warranty extension. Warranty Bulletin D-23-07 Rev. A (XE1) eFlite Si-eVT Transmission – Certain 2017 - 2023 Chrysler Pacifica (RU)