# 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.

- Type: Service bulletin
- NHTSA id: 10138921
- Published by NHTSA: 2018\-06\-04
- 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10138921-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10138921-0001.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0300, P1C64, P24B9, U1431

## Vehicles listed

- 2017 CHRYSLER PACIFICA

## Recalls for the same vehicles and component

- [2018323](/recalls/tc/2018323.md), 2018-06-15: Powertrain
- [17V482000](/recalls/nhtsa/17V482000.md), 2017-07-28: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
- [2017301](/recalls/tc/2017301.md), 2017-06-12: Powertrain

## Other bulletins for the same vehicles and component

- [21\-014\-26](/bulletins/11028767.md), 2026-02-12, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. 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](/bulletins/11024056.md), 2025-10-08, Service bulletin: POWER TRAIN. 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](/bulletins/11021839.md), 2025-08-13, Service bulletin: POWER TRAIN. 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](/bulletins/11018608.md), 2025-05-28, Service bulletin: POWER TRAIN; ENGINE; UNKNOWN OR OTHER. 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](/bulletins/11015891.md), 2025-03-25, Service bulletin: POWER TRAIN. "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](/bulletins/11015868.md), 2025-03-24, Service bulletin: POWER TRAIN. ID\-23\-07 Rev. B \(XE1\) eFlite Si\-eVT Transmission Repair – Certain 2017 \- 2023 Chrysler Pacifica \(RU\)
- [104093](/bulletins/11015791.md), 2025-03-19, Warranty extension: POWER TRAIN. D\-23\-07 Rev. B \(XE1\) eFlite Si\-eVT Transmission Repair – Certain 2017 \- 2023 Chrysler Pacifica \(RU\)
- [21\-001\-25](/bulletins/11012824.md), 2025-01-14, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. "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](/bulletins/11001830.md), 2024-06-18, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. "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](/bulletins/11001645.md), 2024-06-13, Warranty extension: POWER TRAIN. Warranty Bulletin D\-23\-07 Rev. A \(XE1\) eFlite Si\-eVT Transmission – Certain 2017 \- 2023 Chrysler Pacifica \(RU\)

JSON: [/v1/bulletins/10138921](/v1/bulletins/10138921)

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