# Service bulletin 21\-028\-19

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: 10162569
- Published by NHTSA: 2019\-07\-15
- Manufacturer's number: 21\-028\-19
- Manufacturer's date: 2019\-05\-24
- NHTSA component: POWER TRAIN

## NHTSA's summary

Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM with the latest available software. 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:P0780 \- Gear Shift Malfunction. P1DD2 \- Torque Request Signal From TCM Denied. Customers may also experience one or more of the following:A bump feeling and high engine RPMs. The vehicle going into limp home mode.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10162569-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10162569-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0780, P1DD2

## Vehicles listed

- 2019 JEEP COMPASS

## Other bulletins for the same vehicles and component

- [9100776](/bulletins/11030018.md), 2026-03-13, Service bulletin: POWER TRAIN. Before replacing the RDM, please be aware that NVH from differential gears is typical and within the acceptable limits. Do not replace RDM for NVH issue.
- [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.
- [1801923](/bulletins/10248009.md), 2024-01-02, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates 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: ? P06E9 \- Engine Starter Performance \(NA Only\). ? P0456 \- EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. ? P141B \- Starter Control 1 Circuit Performance. ? P141C \- Starter Control 2 Circuit Performance. ? P26E4\-64 \- Starter Control 2 Circuit Signal Plausibility Failure. ? P0615\-64 \- Starter Control Circuit Signal Plausibility Failure. In addition, the customer may notice one or more of the following conditions: ? \*\*A difference in the set cruise control speed and actual speed on the odometer \(i.e. driver sets 100 kph \(62 mph\), vehicle will hit a max of 95 kph \(59 mph\) and cruise at 95 kph \(59 mph\)\) \(Sales Code ED6 Only\).\*\* ? Long engine cranking prior to vehicle start, more noticeable when the outside temperature is above 40 °c \(104 °f\) \(EE with Sales Code ED6 Only\). ? Vehicle will intermittently not start \(South Korea Only\). ? Poor fuel economy. ? Slight engine pinging noise while accelerating and poor performance. ? The engine oil dipstick may indicate a low oil level, however the low oil pressure warning indicator does not illuminate in the Instrument Panel Cluster \(IPC\). ? No crank condition while pushing the start button numerous times, if the vehicle is turned off completely and then restarted, it will start normally. ? Cruise control and adaptive cruise control are inoperable. ? A ?Service Speed Limiter? message in the IPC and Active Vehicle Speed Limiter \(AVSL\) will be inoperable. NOTE: There will be no stored or active DTCs with this IPC message. This bulletin involves reprogramming the PCM with the latest available software.
- [1801923](/bulletins/10234482.md), 2023-04-17, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates 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: ? P06E9 \- Engine Starter Performance \(NA Only\). ? P0456 \- EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. ? P141B \- Starter Control 1 Circuit Performance. ? P141C \- Starter Control 2 Circuit Performance. ? P26E4\-64 \- Starter Control 2 Circuit Signal Plausibility Failure. ? P0615\-64 \- Starter Control Circuit Signal Plausibility Failure. In addition, the customer may notice one or more of the following conditions: ? \*\*A difference in the set cruise control speed and actual speed on the odometer \(i.e. driver sets 100 kph \(62 mph\), vehicle will hit a max of 95 kph \(59 mph\) and cruise at 95 kph \(59 mph\)\) \(Sales Code ED6 Only\).\*\* ? Long engine cranking prior to vehicle start, more noticeable when the outside temperature is above 40 °c \(104 °f\) \(EE with Sales Code ED6 Only\). ? Vehicle will intermittently not start \(South Korea Only\). ? Poor fuel economy. ? Slight engine pinging noise while accelerating and poor performance. ? The engine oil dipstick may indicate a low oil level, however the low oil pressure warning indicator does not illuminate in the Instrument Panel Cluster \(IPC\). ? No crank condition while pushing the start button numerous times, if the vehicle is turned off completely and then restarted, it will start normally. ? Cruise control and adaptive cruise control are inoperable. ? A ?Service Speed Limiter? message in the IPC and Active Vehicle Speed Limiter \(AVSL\) will be inoperable. NOTE: There will be no stored or active DTCs with this IPC message. This bulletin involves reprogramming the PCM with the latest available software.
- [2103920](/bulletins/10229321.md), 2023-01-09, Service bulletin: FUEL SYSTEM, GASOLINE; POWER TRAIN; WHEELS. Transmission Case Oil Leak This bulletin involves tightening the lower transmission bolts to updated torque specifications to possibly eliminate a leak at the case split line of the transmission. Customers may notice \(possibly transmission\) fluid leaking on the ground from the left front of the vehicle.
- [S2021000004](/bulletins/10229310.md), 2023-01-09, Service bulletin: POWER TRAIN; STRUCTURE. Valve Body Learn Procedure On WiTech Shows The Transmission Is Not In The Proper Gear After Repairs
- [1808122](/bulletins/10228038.md), 2022-12-19, Service bulletin: EXTERIOR LIGHTING; PARKING BRAKE; ELECTRICAL SYSTEM; POWER TRAIN; BACK OVER PREVENTION; LANE DEPARTURE; SERVICE BRAKES, HYDRAULIC. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set: P06E9 \- Engine Starter Performance \(North America Only\). P0456 \- EVAP System Small Leak. If DTC P0456 is present use the wiTECH Small Leak Verification test \(SLVT\) to determine if a leak is present in the system. P141B \- Starter Control 1 Circuit Performance. P141C \- Starter Control 2 Circuit Performance. P26E4\-64 \- Starter Control 2 Circuit\-Signal Plausibility Failure. P0615\-64 \- Starter Control Circuit\-Signal Plausibility Failure. In addition, the customer may notice one or more of the following conditions:Long engine cranking prior to vehicle start more noticeable when the outside temperature is above 40°c \(104°f\)\(EMEA with Sales Code ED6 only\). Vehicle will intermittently not start\(South Korea Only\). Poor fuel economy. Slight engine pinging noise while accelerating and poor performance. Engine may stall while idling. The engine oil dipstick may indicate a low oil level, however the low oil pressure warning indicator doesnotilluminate in the Instrument Panel Cluster \(IPC\). No crank condition while pushing the start button numerous times, if they turn the vehicle off completely and then retry it will start normally. Cruise control and adaptive cruise control are inoperable. A ?Service Speed Limiter? message in the IPC and Active Vehicle Speed Limiter \(AVSL\) will be inoperable. There will be no stored or active DTCs with this IPC message.
- [S1908000102](/bulletins/10224022.md), 2022-10-17, Service bulletin: POWER TRAIN. \(Rev. A\) Power Inverter Load Ratings
- [S2018000008](/bulletins/10223551.md), 2022-10-17, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Engine Surge Feel and/or Diagnostic Trouble Code P0299 ? Turbo Underboost Condition After Updating The Powertrain Control Module \(PCM\) Software. \(ETL, ETM, ETN Engines\)
- [S1721000016](/bulletins/10223532.md), 2022-10-17, Service bulletin: POWER TRAIN. Service 4wd Light On, Message AWD System Service Required

JSON: [/v1/bulletins/10162569](/v1/bulletins/10162569)

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