WenmarOpen by Wenmar Pro

Service bulletin 08-027-21

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 id10188829
Published by NHTSA2021-03-15
Manufacturer's number08-027-21
Manufacturer's date2021-02-27
NHTSA componentPOWER TRAIN

NHTSA's summary

Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):C2502-64 - Signal Plausibility Failure. C2210-92 - ETM Hall Sensor Performance Or Incorrect Operation. C2220-54 - ETM Calibration Error Missing Calibration. C2020-01 - ECU Internal Fault - General Electrical Failure. This software update also includes the following enhancementsReduce Rear Drive Module (RDM) noise during disconnect phase at speeds above 45 kph (28 mph)North America Only.

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

Trouble codes named

C2020, C2210, C2220, C2502

Vehicles listed
FIAT 5002015
FIAT 500X2016, 2017, 2018
JEEP RENEGADE2015, 2016, 2017, 2018

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

Recalls for the same vehicles and component
20184222018-08-09. Powertrain
20163612016-07-13. Powertrain
16V5290002016-07-12. POWER TRAIN:AUTOMATIC TRANSMISSION
16V3020002016-05-16. POWER TRAIN:MANUAL TRANSMISSION
20162172016-05-12. Powertrain
15V2910002015-05-18. POWER TRAIN:AUTOMATIC TRANSMISSION

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
21-040-252025-10-08. Service bulletin. 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.
S23250000072024-01-08. Service bulletin. MIL/check engine lamp comes on after performing U90 recall PCM software update.
S23250000072023-10-30. Service bulletin. MIL/check engine lamp comes on after performing U90 recall PCM software update.
W842023-01-17. Service bulletin. Customer Satisfaction Notification W84 Powertrain Software Update
1805814a2023-01-17. Service bulletin. Flash: MIL Illumination, P0141 Oxygen Sensor 1/2 Heater Performance This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest software. The customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find Diagnostic Trouble Code (DTC) P0141 Oxygen Sensor 1/2 Heater Performance. Improved reverse lamp activation time (auto trans only).
18055202023-01-09. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):U0402 - Implausible Data Received From TCM. P1DD2 - Torque Request Signal From TCM Denied. U1424 - Implausible Engine Torque Signal Received. P0101 - Mass Air Flow Sensor "A" Circuit Performance. U0418 - Invalid Data Received From Brake System Control Module. P0128 - Thermostat Rationality. P0703 - Brake Switch 2 Performance. P1185 - General Pressure Sensor Correlation. U1504 - Implausible Message Data Length Received From Steering Angle Sensor. Customers may also experience the following:Vehicle periodically may fail to start(ED6 engine only). In addition, the following software enhancements are available:Changes which allow the catalytic convertor to operate cooler. Multiair solenoid electrical opening change to resolve idle tick/tap issue. Cruise control enhancements.
2102415-12023-01-09. Service bulletin. 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 Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): ? P0711 - Transmission Fluid Temperature Sensor A Circuit Range-Performance ? P1CC9 - Unable to Engage Gear ? P1D98 - Incorrect Gear Ratio Clutch B or D Defective ? P1DAD - Input Shaft-Output Shaft Direction Correlation ? U1424 - Implausible Engine Torque Signal Received In addition, the customer may also experience one or more of the following transmission related conditions: ? Less than desired 1-2 upshift on tip-in acceleration. ? Less than desired accelerator pedal response in Sport and TractionPlus modes. ? RPM flare at engine start. ? Less than desired idle performance when shifting into DRIVE or REVERSE following a cold start.
21036152023-01-09. Service bulletin. 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 or notice harsh shifts.
21032152023-01-09. Service bulletin. 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 Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P0711 - Transmission Fluid Temperature Sensor A Circuit Range-Performance ? P0887 - TCM Power Control Circuit High ? P1CC9 - Unable to Engage Gear ? P1D98 - Incorrect Gear Ratio Clutch B or D Defective ? U0401 - Implausible Data Received From ECM-PCM
21030152023-01-09. Service bulletin. 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 Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or both of the following Diagnostic Trouble Codes (DTCs). ? P0711 - Transmission Fluid Temperature Sensor A Circuit Range-Performance ? P1DAD - Input Shaft-Output Shaft Direction Correlation ? P1CC9 - Unable to Engage Gear ? P1D98 - Incorrect Gear Ratio Clutch B or D Defective ? U1424 - Implausible Engine Torque Signal Received