# Service bulletin 21\-018\-14 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: 10139887
- Published by NHTSA: 2018\-06\-11
- Manufacturer's number: 21\-018\-14 REV. B
- Manufacturer's date: 2014\-12\-09
- NHTSA component: POWER TRAIN

## NHTSA's summary

Flash: Transmission Shift and Diagnostic Enhancements This bulletin involves flash reprogramming of the Transmission Control Module \(TCM\) with new software.Vehicles that are being updated from TCM software p/n 682235$$AN or 682354$$AN \($$ are wild cards for any number\) will not require the 9 Speed Adaptation Drive Learn Procedure to be performed. However, vehicles being updated from any other software part number will require the Adaptation Drive Learn Procedure to be performed. Refer to all applicable published service bulletins regarding the 9 Speed Adaptation Drive Learn procedure for detailed repair procedures and labor times. Diagnostic Trouble Code \(DTC\) robustness improvements are included in this software release. These improvements apply to the following DTCs: P072F\- Stuck in Gear 4 P076F\- Gear 7 shift incorrect ratio P0810\- Clutch position control error P1CC9\- Unable to engage gear P0734\- Gear 4 shift incorrect ratio P061B\- Internal control module torque calculation performance

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10139887-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10139887-0001.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P061B, P072F, P0734, P076F, P0810, P1CC9

## Vehicles listed

- 2014 JEEP CHEROKEE

## Recalls for the same vehicles and component

- [2020261](/recalls/tc/2020261.md), 2020-06-12: Powertrain
- [20V343000](/recalls/nhtsa/20V343000.md), 2020-06-11: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; POWER TRAIN:AUTOMATIC TRANSMISSION
- [2019298](/recalls/tc/2019298.md), 2019-06-14: Powertrain
- [19V447000](/recalls/nhtsa/19V447000.md), 2019-06-13: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2016361](/recalls/tc/2016361.md), 2016-07-13: Powertrain
- [16V529000](/recalls/nhtsa/16V529000.md), 2016-07-12: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [S1721000016 REV.B](/bulletins/11026812.md), 2025-12-23, Service bulletin: POWER TRAIN. Service 4wd Light On, AWD System Service Required Message Illuminated. Diagnostic Trouble Code \(DTC\) C14A7\-97 PTU Motor Component Or System Operation Obstructed Or Blocked.
- [S2325000007](/bulletins/10248564.md), 2024-01-08, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). MIL/check engine lamp comes on after performing U90 recall PCM software update.
- [S2325000007](/bulletins/10244403.md), 2023-10-30, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). MIL/check engine lamp comes on after performing U90 recall PCM software update.
- [2101423](/bulletins/10241067.md), 2023-08-21, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Power Transfer Unit \(PTU\) Broken Input Spline XJ1 Warranty Extension 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: ? P1720\-00 \- Output Speed Sensor Wheel Speed Rationality. ? P215C\-00 \- Output Shaft Speed Wheel Speed Correlation. This bulletin involves replacing the PTU assembly with an updated part.
- [91490](/bulletins/10241042.md), 2023-08-21, Service bulletin: POWER TRAIN; UNKNOWN OR OTHER. FCA Caribbean Warranty Bulletin ID\-23\-11 \(XJ1\) Power Transfer Unit \(PTU\) \- Select 2014 \- 2017 Jeep Cherokee \(KL\)
- [91486](/bulletins/10241041.md), 2023-08-21, Service bulletin: POWER TRAIN; UNKNOWN OR OTHER. Warranty Bulletin D\-23\-10 \(XJ1\) Power Transfer Unit \(PTU\) \- Select 2014 \- 2017 Jeep Cherokee \(KL\)
- [1806014\-1](/bulletins/10232018.md), 2023-02-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Diagnostic And System Improvements
- [W84](/bulletins/10230242.md), 2023-01-17, Service bulletin: POWER TRAIN. Customer Satisfaction Notification W84 Powertrain Software Update
- [2101721\-1](/bulletins/10230113.md), 2023-01-17, Service bulletin: WHEELS; POWER TRAIN. Power Transfer Unit \(PTU\) Broken Input Spline \- X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: P1720\-00 \- Output Speed Sensor\-Wheel Speed Rationality. P215C\-00 \- Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following:Grinding noise coming from under the vehicle while driving. Vehicle will not move.
- [74595](/bulletins/10230083.md), 2023-01-17, Service bulletin: POWER TRAIN. Warranty Bulletin D\-21\-07 \(X89\) Power Transfer Unit \- 2014\-2017 Jeep Cherokee \(KL\)

JSON: [/v1/bulletins/10139887](/v1/bulletins/10139887)

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