Service bulletin 18-042-21

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)
Type	Service bulletin
NHTSA id	10198417
Published by NHTSA	2021-06-28
Manufacturer's number	18-042-21
Manufacturer's date	2021-05-05
NHTSA component	ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; EXTERIOR LIGHTING; BACK OVER PREVENTION

NHTSA's summary

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) have been set: P1D7F-00 - ETC Self-Learning Failure. P1523-00 - VVA Low Oil Pressure. P1524-00 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. P0141 - O2 Sensor 1/2 Heater Performance. Some customers may experience one or more of the following conditions: After a short trip and shutting the engine off for 5-10 minutes, vehicle exhibits a long crank/start condition(2016 BU EMEA only). Cruise control will not set at 32 kph (20 mph). Engine cranking times out after five seconds. Cruise control will not engage at highway speeds and when in 6th gear. A ticking noise coming from the top of the engine area. The ticking noise is heard particularly at idle (EMEA and APAC only). The following enhancements are also included: Improved purge sensor performance. Updated fuel strategy to inhibit spark plug fouling.

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

Brakes, Driver assistance, Electrical system, Lighting, Backup camera

Trouble codes named

P0141, P1523, P1524, P1D7F

Vehicles listed
FIAT 500X	2016
JEEP RENEGADE	2015, 2016

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

Other bulletins for the same vehicles and component
1804221	2023-01-17. 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) have been set: P1D7F-00 - ETC Self-Learning Failure. P1523-00 - VVA Low Oil Pressure. P1524-00 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. P0141 - O2 Sensor 1/2 Heater Performance. Some customers may experience one or more of the following conditions: After a short trip and shutting the engine off for 5-10 minutes, vehicle exhibits a long crank/start condition(2016 BU EMEA only). Cruise control will not set at 32 kph (20 mph). Engine cranking times out after five seconds. Cruise control will not engage at highway speeds and when in 6th gear. A ticking noise coming from the top of the engine area. The ticking noise is heard particularly at idle (EMEA and APAC only). The following enhancements are also included: Improved purge sensor performance. Updated fuel strategy to inhibit spark plug fouling.
2102415-1	2023-01-09. 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.
2103215	2023-01-09. 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
2103015	2023-01-09. 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
0810217	2022-10-31. Service bulletin. RA2 RJ2 RG2 RL2 and RM2 Radio Enhancements This bulletin involves updating the radio with the latest available software. The customer may notice one of the following:The parking sensor (warning chime) is still audible after the key is in the off position(EMEA and APAC Only). The radio re-boots if more than five favorite presets are set for each category (i.e. Sport or Rock)(RA2 Sales Code Only). Emergency number (i.e. 911) not set as default(U.S. BU Vehicles Only). Radio re-boots or displays black screens. When receiving or making outgoing phone calls, the other person may hear an echo or repeated phrases(16 MY FB Only). A false message displayed in the Instrument Panel Cluster (IPC) such as ?Parking Sensors Unavailable? and/or ?Sound System Unavailable?(16 MY FB Only).
1808817	2022-10-31. Service bulletin. Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. Customers may experience a ticking noise coming from the top of the engine area. The ticking noise is heard particularly at idle.
1804221	2022-10-17. 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) have been set: P1D7F-00 - ETC Self-Learning Failure. P1523-00 - VVA Low Oil Pressure. P1524-00 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. P0141 - O2 Sensor 1/2 Heater Performance. Some customers may experience one or more of the following conditions: After a short trip and shutting the engine off for 5-10 minutes, vehicle exhibits a long crank/start condition(2016 BU EMEA only). Cruise control will not set at 32 kph (20 mph). Engine cranking times out after five seconds. Cruise control will not engage at highway speeds and when in 6th gear. A ticking noise coming from the top of the engine area. The ticking noise is heard particularly at idle (EMEA and APAC only). The following enhancements are also included: Improved purge sensor performance. Updated fuel strategy to inhibit spark plug fouling.
0806316	2022-09-26. Service bulletin. RA2 Radio software enhancement.
0803316A	2022-09-26. Service bulletin. Updating the radio software.
03-001-17	2022-08-08. Service bulletin. Noise In Front Of Vehicle When Accelerating Or Decelerating This bulletin involves replacing both front half shafts. The customer may describe a ?clunk type? noise in front of the vehicle while accelerating or decelerating.