# Service bulletin 21\-016\-15 REV. B

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: 10217388
- Published by NHTSA: 2022\-08\-08
- Manufacturer's number: 21\-016\-15 REV. B
- Manufacturer's date: 2015\-10\-06
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN; EXTERIOR LIGHTING

## NHTSA's summary

Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. A small number of customers may experience a ?Stop/Start Ready? message in the Instrument Panel Cluster \(IPC\) when the vehicle did not perform an auto stop event. This message typically occurs while the vehicle is being driven in Snow Mode. In addition, a small number of 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 \(DTCs\) stored in the TCM memory. ? P0887 \- TCM Power Control Circuit High ? P1634 \- TCM Internal Internal Watchdog Performance ? P061B \- Internal Control Module Torque Calculation Performance. ? U0401 \- Implausible Data Received From The ECM/PCM. ? P1DAD \- Input Shaft/Output Shaft Direction Correlation. ? P1DAF \- Incompatible Limp In Action Requested \(set in conjunction with U1424 \- Implausible Engine Torque Signal Received\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10217388-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10217388-9999.pdf)

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

## Components

Electrical system, Lighting, Transmission and driveline

## Trouble codes named

P061B, P0887, P1634, P1DAD, P1DAF, U0401, U1424

## Vehicles listed

- 2015 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [18V332000](/recalls/nhtsa/18V332000.md), 2018-05-17: ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING
- [2016184](/recalls/tc/2016184.md), 2016-04-26: Powertrain
- [16V240000](/recalls/nhtsa/16V240000.md), 2016-04-25: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## Other bulletins for the same vehicles and component

- [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.
- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, 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.
- [S2623000023](/bulletins/11031337.md), 2026-04-15, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Power Liftgate Inoperative.
- [S2621000003 REV.A](/bulletins/11030138.md), 2026-03-18, Service bulletin: POWER TRAIN. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV, 8HP75\-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [S2608000010](/bulletins/11030042.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. Active Diagnostic Trouble Code \(DTC\) B1A10\-00, B1A11\-00, B1A12\- 00, B1A13\-00\-, B1A14\-00, B1A15\-00, B1A16\-00, and B1A17\-00 in The Radio Frequency Hub \(RFH\)
- [9100671](/bulletins/11023329.md), 2025-09-24, Service bulletin: ELECTRICAL SYSTEM. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders: Warranty, Mopar, Customer pay and Service contract. Order "68" part number for New unsold units only.
- [S2208000138 REV.B](/bulletins/11020600.md), 2025-07-09, Service bulletin: ELECTRICAL SYSTEM. Decreased Remote Start And RKE Range. Tire Pressure Sensors Values Are Not Displayed
- [9100500](/bulletins/11014529.md), 2025-02-26, Service bulletin: ELECTRICAL SYSTEM. Touchscreen For all infotainment system repairs \(touchscreens, radios, etc.\), refurbished parts may be available. Follow the Infotainment Ordering guide available under the "Parts" section of Dealer Connect: DealerCONNECT\> Parts\> News\& Information\> Audio \& Electronic Products Exchange Process
- [S1408000384 REV.H](/bulletins/11013171.md), 2025-01-28, Service bulletin: ELECTRICAL SYSTEM. Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor \(IBS\) State of Charge \(SOC\) Inaccurate, Battery Charging Message, Presence of IBS Related Diagnostic Trouble Codes \(DTCs\), or Battery Warning Lamp On
- [101232](/bulletins/11010205.md), 2024-11-07, Service bulletin: POWER TRAIN. Plate \- Planetary

JSON: [/v1/bulletins/10217388](/v1/bulletins/10217388)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2021-016-15%20REV.%20B&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10217388&vehicle=Service%20bulletin%2021-016-15%20REV.%20B)