Service bulletins for the 2016 Fiat 500X
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.
229 on file from NHTSA, as of 2026-10-19.
About U1424 on the 2016 Fiat 500X: what the code means, and the bulletins and recalls about the same components.
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By component
By trouble code
Only bulletins with trouble code: U1424 are shown. Show all
| 2102415-1 | 2023-01-09. Service bulletin. POWER TRAIN; BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING. 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. |
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| 0801016 | 2022-12-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; WHEELS. Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM) with the latest available software. All three modules must be updated in this service action. Powertrain Control Module (PCM) 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): · U1424-00 - Implausible Engine Torque Signal Received. · P0335 - Crankshaft Position Sensor Circuit. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P1CEC - Variable Valve Solenoid Valve Cold Start Closing Position 1 Timing Over-Retard. · P1CED - VAriable Valve Timing Solenoid Valve Cold Start Closing Position Timing Over-Advance. · P1607 - PCM Internal Shutdown Timer Rationality. · P2610 - PCM Internal Engine Off Timer Performance. · P0440 - General EVAP System Failure. · P0441 - EVAP Purge System Performance. · P0456 - EVAP System Small Leak. · P0455 - EVAP System Large Leak. · P0452 - EVAP Pressure Switch Stuck Closed. · P0133 - O2 Sensor 1/1 Slow Response. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · U0428-00 - Implausible Data Received From Steering Angle Sensor Module. · P1185 - General Pressure Sensor Correlation. · C0061 - Lateral Acceleration Sensor. · P0128 - Thermostat Rationality. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · C0062 - Longitudinal Acceleration Sensor In Airbag System - Signal Invalid. |
| 0801016 | 2022-09-19. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM) with the latest available software. All three modules must be updated in this service action. Powertrain Control Module (PCM) 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): · U1424-00 - Implausible Engine Torque Signal Received. · P0335 - Crankshaft Position Sensor Circuit. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P1CEC - Variable Valve Solenoid Valve Cold Start Closing Position 1 Timing Over-Retard. · P1CED - VAriable Valve Timing Solenoid Valve Cold Start Closing Position Timing Over-Advance. · P1607 - PCM Internal Shutdown Timer Rationality. · P2610 - PCM Internal Engine Off Timer Performance. · P0440 - General EVAP System Failure. · P0441 - EVAP Purge System Performance. · P0456 - EVAP System Small Leak. · P0455 - EVAP System Large Leak. · P0452 - EVAP Pressure Switch Stuck Closed. · P0133 - O2 Sensor 1/1 Slow Response. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · U0428-00 - Implausible Data Received From Steering Angle Sensor Module. · P1185 - General Pressure Sensor Correlation. · C0061 - Lateral Acceleration Sensor. · P0128 - Thermostat Rationality. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · C0062 - Longitudinal Acceleration Sensor In Airbag System - Signal Invalid. |
| 21-024-15 REV D | 2019-05-20. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. 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: ? Garage Shifts (Shifting from Park or Neutral into Drive or Reverse). ? Harsh 1-2 upshifts. ? Less than desired accelerator pedal response in Sport and Traction Plus modes. ? RPM flare at engine start. ? Less than desired idle performance when shifting into DRIVE or REVERSE following a cold start. The following enhancements are included in the software update: ? Vehicle performance enhancements. ? Improve transmission shift enhancements for sand and snow mode. ? Improved paddle shifter operation. |
| 21-024-15 REV C | 2019-05-20. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 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: ? Garage Shifts (Shifting from Park or Neutral into Drive or Reverse). ? Harsh 1-2 upshifts. ? 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. The following enhancements are included in the software update: ? Improved paddle shifter operation. ? Improve transmission shift enhancements for sand and snow mode. |
| 08-010-16 REV. C | 2018-06-11. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE; BACK OVER PREVENTION; SEAT BELTS; WHEELS; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING; AIR BAGS; POWER TRAIN; STEERING. Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM) with the latest available software. All three modules must be updated in this service action. Powertrain Control Module (PCM) 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): U1424-00 - Implausible Engine Torque Signal Received. P0335 - Crankshaft Position Sensor Circuit. P1185 - General Pressure Sensor Correlation. P050D - Cold Start Rough Idle. P1CEC - Variable Valve Solenoid Valve Cold Start Closing Position 1 Timing Over-Retard. P1CED - VAriable Valve Timing Solenoid Valve Cold Start Closing Position Timing Over-Advance. P1607 - PCM Internal Shutdown Timer Rationality. P2610 - PCM Internal Engine Off Timer Performance. · P0440 - General EVAP System Failure. · P0441 - EVAP Purge System Performance. · P0456 - EVAP System Small Leak. · P0455 - EVAP System Large Leak. · P0452 - EVAP Pressure Switch Stuck Closed. · P0133 - O2 Sensor 1/1 Slow Response. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · U0428-00 - Implausible Data Received From Steering Angle Sensor Module. · P1185 - General Pressure Sensor Correlation. · C0061 - Lateral Acceleration Sensor. · P0128 - Thermostat Rationality. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · C0062 - Longitudinal Acceleration Sensor In Airbag System - Signal Invalid. · U0402 - Implausible Data Received From TCM - (Transmission Control Module). |
| 08-010-16 REV. B | 2018-05-21. Service bulletin. POWER TRAIN. Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM) with the latest available software. All three modules must be updated in this service action. Powertrain Control Module (PCM) 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): ·**U1424-00 - Implausible Engine Torque Signal Received. ·P0335 - Crankshaft Position Sensor Circuit. ·P1185 - General Pressure Sensor Correlation. ·P050D - Cold Start Rough Idle. ·P1CEC - Variable Valve Solenoid Valve Cold Start Closing Position 1 Timing Over-Retard. ·P1CED - VAriable Valve Timing Solenoid Valve Cold Start Closing Position Timing Over-Advance. ·P1607 - PCM Internal Shutdown Timer Rationality. ·P2610 - PCM Internal Engine Off Timer Performance. ·P0440 - General EVAP System Failure. ·P0441 - EVAP Purge System Performance. ·P0456 - EVAP System Small Leak. ·P0455 - EVAP System Large Leak. ·P0452 - EVAP Pressure Switch Stuck Closed. ·P0133 - O2 Sensor 1/1 Slow Response. ·C0501 - Wheel Speed Signal Left Front Rationality. ·C0507 - Wheel Speed Signal Right Front Rationality. ·C050D - Wheel Speed Signal Left Rear Rationality. ·C0513 - Wheel Speed Signal Right Rear Rationality. ·U0428-00 - Implausible Data Received From Steering Angle Sensor Module. ·P1185 - General Pressure Sensor Correlation. ·C0061 - Lateral Acceleration Sensor. ·P0128 - Thermostat Rationality. ·C0501 - Wheel Speed Signal Left Front Rationality. ·C0507 - Wheel Speed Signal Right Front Rationality. ·C050D - Wheel Speed Signal Left Rear Rationality. ·C0513 - Wheel Speed Signal Right Rear Rationality. ·C0062 - Longitudinal Acceleration Sensor In Airbag System - Signal Invalid.** ·U0402 - Implausible Data Received From TCM - (Transmission Control Module). |
| 08-010-16 | 2017-11-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN; ELECTRICAL SYSTEM. Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM), Transmission Control Module (TCM) with the latest available software. All three modules must be updated in this service action. 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: · Garage Shifts (Shifting from Park or Neutral into Drive or Reverse). · Harsh 1-2 upshifts. · Less than desired accelerator pedal response in Sport and Traction Plus modes. · RPM flare at engine start. · Less than desired idle performance when shifting into DRIVE or REVERSE following a cold start. The following enhancements are included in the software update: · Vehicle performance enhancements. · Improve transmission shift enhancements for sand and snow mode. · Improved paddle shifter operation. Body Control Module (BCM) A customer may describe that the remote key is not recognized and doesn't open/close door locks. In some cases the engine may not start due to the fact that a valid key is not recognized. Upon further investigation the technician may find the Diagnostic Trouble Codes (DTCs): · B105A-64 - Doors Lock All-Signal Plausibility Failure. · B105D-64 - Doors Deadlock Or Unlock Driver-Signal Plausibility Failure. |
| 08-010-16 REV. D | 2017-11-03. Service bulletin. POWER TRAIN; SERVICE BRAKES, HYDRAULIC; BACK OVER PREVENTION; STEERING; STRUCTURE; EXTERIOR LIGHTING; WHEELS; ELECTRICAL SYSTEM. Flash: Diagnostic And System ImprovementsThis bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM) with the latest available software. All three modules must be up to date when finished with this service action. 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):· **P1066 - Cylinder 1 oil supply solenoid valve switch off time out of range.· P1068 - Cylinder 2 oil supply solenoid valve switch off time out of range. · P106A - Cylinder 3 oil supply solenoid valve switch off time out of range. · U1424-00 - Implausible Engine Torque Signal Received.** · P0335 - Crankshaft Position Sensor Circuit. P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle.· P1CEC - Variable Valve Solenoid Valve Cold Start Closing Position 1 Timing Over-Retard.· P1CED - VAriable Valve Timing Solenoid Valve Cold Start Closing Position Timing Over-Advance.· P1607 - PCM Internal Shutdown Timer Rationality.· P2610 - PCM Internal Engine Off Timer Performance.· P0440 - General EVAP System Failure.· P0441 - EVAP Purge System Performance.· P0456 - EVAP System Small Leak.· P0455 - EVAP System Large Leak.· P0452 - EVAP Pressure Switch Stuck Closed· P0133 - O2 Sensor 1/1 Slow Response.· C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Rationality. · C0513 - Wheel Speed Signal Right Rear Rationality. · U0428-00 - Implausible Data Received From Steering Angle Sensor Module. · P1185 - General Pressure Sensor Correlation. · C0061 - Lateral Acceleration Sensor. · P0128 - Thermostat Rationality. · C0501 - Wheel Speed Signal Left Front Rationality. · C0507 - Wheel Speed Signal Right Front Rationality. · C050D - Wheel Speed Signal Left Rear Ration |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.