# Service bulletin 08\-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: 10175737
- Published by NHTSA: 2020\-05\-26
- Manufacturer's number: 08\-050\-20
- Manufacturer's date: 2020\-04\-23
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, the technician may notice one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P1A29\-00 \- Cell Supervisory Circuit A Failure. P1A2A\-00 \- Cell Supervisory Circuit B Failure.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175737-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175737-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

P1A29, P1A2A

## Vehicles listed

- 2019 CHRYSLER PACIFICA

## Recalls for the same vehicles and component

- [2023008](/recalls/tc/2023008.md), 2023-01-18: Electrical
- [23V010000](/recalls/nhtsa/23V010000.md), 2023-01-17: ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; HYBRID PROPULSION SYSTEM: INVERTER
- [2020254](/recalls/tc/2020254.md), 2020-06-10: Electrical
- [20V334000](/recalls/nhtsa/20V334000.md), 2020-06-09: ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH; ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
- [19V348000](/recalls/nhtsa/19V348000.md), 2019-05-09: ELECTRICAL SYSTEM:12V/24V/48V BATTERY
- [18V524000](/recalls/nhtsa/18V524000.md), 2018-08-09: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD

## Other bulletins for the same vehicles and component

- [S2621000006](/bulletins/11038331.md), 2026-10-07, Service bulletin: ELECTRICAL SYSTEM. Note: Document released 10/2/2026. Multiple Warning Indicators On In The IPC. ESM \- PRNDL Flashing. And The Vehicle Will Not Shift Into Gear. The Wipers May Be On, With An Electric Parking Brake Unavailable.
- [9100900](/bulletins/11037346.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100860](/bulletins/11035068.md), 2026-07-18, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000046](/bulletins/11034388.md), 2026-07-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Calibration Requirements For The Power Sliding Door Module \(PSDM\).
- [S2623000041 REV.A](/bulletins/11034351.md), 2026-07-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Power Liftgate Intermittently Inoperative. Will Not Open/ Close. Liftgate/Hatch Ajar Message Displayed. Rev A
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000040](/bulletins/11033896.md), 2026-06-16, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
- [S2623000041](/bulletins/11033895.md), 2026-06-16, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Power Liftgate Intermittently Inoperative. Will Not Open/ Close. Liftgate/Hatch Ajar Message Displayed.
- [08\-108\-26 REV. A](/bulletins/11033327.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM. Flash: Hybrid Control Processor \(HCP\) / Auxiliary Hybrid Control Processor \(AHCP\) 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 \(DTCs\): ● P0E15\-00 \- Hybrid\-EV Battery Pack Coolant Heater A Control Performance. ● P0A44 \- Drive Motor A Position Sensor 1 Circuit Overspeed. ● U0111\-00 \- Lost Communication With Battery Energy Control Module \(BPCM\). ● P1625\-00 \- Park Pawl System Failure. ● U0412\-00 \- Invalid Data Received From Battery Energy Control Module\-A. ● P215B\-00 \- Vehicle Speed Output Shaft Speed Correlation. ● P079A\-00 \- Transmission Friction Element 1 Slip Detected. ● P079B\-00 \- Transmission Friction Element 2 Slip Detected. ● P084F\-00 \- Park\-Neutral Switch Output Customers may also comment on one or more of the following: ● Vehicle does not start / engine does not crank. ● Extended engine cranking time when starting the vehicle. ● Engine turns on when requesting cabin heat to turn on. ● Loss of heat from the engine. ● Technicians and/or customers may report the vehicle will not pass a state smog check due to permanent fault codes which will not clear. As a result, the vehicles are not eligible to be registered in certain states. ● Vehicle will not start when it is cold \(\-30°C / \-22°F and below\). ● Heard and/or felt bump when the gas engine turns on while driving. ● Service Charging System and Traction Battery Cutoff warning messages appear during a key cycle event at \-7° C \(\+20°F\). ● Vehicle will force to Park when keyed off in Neutral if the door is open during wake\-up procedure and remains open or within 2 minutes of door closure ● Loss of power steering assist when ignition push\-button is pressed by driver after a Remote Start. ● Unusual battery drain when DTC, P084F\-00 \- Park\-Neutral Switch Output is set. This software release includes the following software enhancements: ● Corrections to allow the vehicle to clear the permanent fault codes. ● 12V battery overcharged prevention. ● Corrected fuel consumption counter while in charge depleting This bulletin involves reprogramming the \*\*HCP and then the AHCP\*\* with the latest available software.

JSON: [/v1/bulletins/10175737](/v1/bulletins/10175737)

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