Service bulletin 21-027-15 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 | 10148956 |
| Published by NHTSA | 2018-11-26 |
| Manufacturer's number | 21-027-15 REV-A |
| Manufacturer's date | 2015-08-05 |
| NHTSA component | POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN |
NHTSA's summary
Flash: Transmission Shift Enhancements This bulletin involves reprogramming of the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience an erroneous Malfunction Indicator Lamp (MIL) Illumination. Upon further investigation, the technician may find a Diagnostic Trouble Code (DTC) stored in the TCM memory. In addition, the following TCM calibration improvements are also available for vehicles equipped with the 845RE 8 speed transmission (Sales Code DFL). These improvements are listed per engine application. 3.0L Gas Engine (Sales Code EHD) ? P1DCD - TCM monitoring processor performance multiple clutches locked up. ? P1B13 - Park-By-Wire unintended out of park position. ? P0734 - Gear 4 Shift Incorrect Ratio ? Improved upshift timing. ? Improved torque converter engagement. ? Improved shift timing during tow mode operation. ? Improved shift points during aggressive driving. ? Calibration improvement to correct bump feel during 2-1 downshift. ? Improved shift timing while in snow, base, and hill modes. 3.6L Gas Engine (Sales Code ERB) ? P1DCD - TCM monitoring processor performance multiple clutches locked up. ? P1B13 - Park-By-Wire unintended out of park position. ? P0734 - Gear 4 Shift Incorrect Ratio ? Improved 4-3 and 3-2 downshifts. ? Improved shift timing at higher altitudes. ? Improved shift timing while in sand mode. ? Calibration improvement for multi-gear downshift timing during passing maneuvers. ? Calibration improvement for intermittent delayed upshift.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Transmission and driveline, Automatic transmission
Trouble codes named
P0734, P1B13, P1DCD
| DODGE DURANGO | 2015 |
|---|---|
| JEEP GRAND CHEROKEE | 2015 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 16V240000 | 2016-04-25. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 2103914 | 2023-02-21. Service bulletin. Transmission Shift Enhancements |
|---|---|
| 1806714 | 2023-02-21. Service bulletin. MIL Illumination, P1CF3 Battery Temperature Sensor Out of Range Low |
| S1709000010 | 2023-01-09. Service bulletin. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary. |
| V51 | 2022-12-19. Service bulletin. Customer Satisfaction Notification V51 Reprogram Powertrain Control Module |
| W41 | 2022-09-26. Service bulletin. Customer Satisfaction Notification W41 Reprogram Powertrain Control Module |
| 2102815 | 2022-09-26. Service bulletin. 8HP70 Tranmission shift enhancements. |
| 18-047-15 REV. A | 2022-07-25. Service bulletin. Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. 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 PCM memory. ? P204F-00 - Reductant System Performance ? P20E9-00 - Reductant Pressure Too High ? P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Control ? P2002-00 - Diesel Particulate Filter Efficiency Below Threshold ? P20C2-00 - Reductant Heater 3 Control Circuit Performance ? P2299-00 - Brake Pedal Position/Accelerator Pedal Position Incompatible ? P208B-00 - Reductant Pump 1 Control Performance ? P1288-00 - NOX Sensor 1/2 Zero Offset Too High |
| 18-070-15 | 2022-07-25. Service bulletin. Flash: PCM Software Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory. ? P0301- Cylinder 1 Misfire ? P0302- Cylinder 2 Misfire ? P0303- Cylinder 3 Misfire ? P0304- Cylinder 4 Misfire ? P0305- Cylinder 5 Misfire ? P0306- Cylinder 6 Misfire ? P0300- Multiple Cylinder Misfire ? P0513- Invalid SKIM Key |
| 25-002-15 REV. A | 2022-07-25. Service bulletin. P0455 And/Or P0456 Set In The PCM This bulletin involves replacing the evaporative emissions purge valve hose due to a split in the hose that will prevent the system from sealing. The customer may experience a Malfunction Indicator Lamp (MIL) while driving. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) set in the PCM memory. ? P0455 EVAP System Large Leak ? P0456 EVAP System Small Leak |
| 9004509 | 2022-05-31. Service bulletin. Oil Filter If a Mopar Oil Filter is not available, use a filter that meets or exceeds USCAR36 specification and is compatible with semi and full synthetic oils. Recommended Brands: Wix, Purolator, and NapaGold |