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Service bulletin 21-004-15

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10148601
Published by NHTSA2018-11-19
Manufacturer's number21-004-15
Manufacturer's date2015-01-24
NHTSA componentPOWER TRAIN; ENGINE; ELECTRICAL SYSTEM

NHTSA's summary

Flash: 845RE Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. The following TCM calibration improvements are available for vehicles equipped an 845RE Automatic Transmission (Sales Code DFL). These updates are listed by vehicle and engine. LD and LX vehicles equipped with a 3.6L engine (Sales Code ERB) ? Software to correct a harsh bump feel during a 2-1 downshift. ? Software to enable the scan tool based transmission ?Quick Learn.? ? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles. LX and WK vehicles equipped with a 3.0L engine (Sales Code EHD) ? Software to correct a harsh bump feel during a 2-1 downshift. WK vehicles equipped with a 3.6L engine (Sales Code ERB) ? ECO mode will not retain settings. If ECO mode is turned off, it will turn back on after the ignition is cycled. ? Software to correct a harsh bump feel during a 2-1 downshift. DS vehicles equipped with 3.6L engine (Sales Code ERB) ? Software to correct a harsh bump feel during a 2-1 downshift. ? Software to address a customer?s concern of less than desired shift quality in Four Wheel Drive (4wd) Low mode during medium to heavy acceleration. ? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles. ? Software improvements to powertrain braking in Tow/Haul mode. ? Software to improve downshift response from a medium to heavy pedal acceleration. ? Driveability improvements at higher altitudes. ? Software to improve acceleration during cruise control operation ? Software to correct a condition where DTC U11C3 - ESM Lost Communication With TCM On D-Pt CAN may have been displayed inste

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

Electrical system, Engine, Transmission and driveline

Trouble codes named

P215C, U11C3

Vehicles listed
CHRYSLER 3002014
DODGE CHARGER2014
DODGE DURANGO2014
JEEP GRAND CHEROKEE2014
RAM 15002014

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20233382023-06-08. Engine
23V4110002023-06-08. ENGINE AND ENGINE COOLING
20205442020-11-12. Engine
20V6990002020-11-12. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
20203712020-08-13. Engine
20V4750002020-08-13. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
20195352019-10-25. Engine
19V7570002019-10-24. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
20182692018-05-17. Engine
18V3320002018-05-17. ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
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