U0401 · Herstellerinformationen

MAZDA · 2026-02-26

Some vehicles may display some (or all) of the following symptoms: • Check engine light on with DTC P061B • Light increase in engine rpms during acceleration • Transmission will not shift past 4th gear • Various U codes (U0401 ABS, U0401, U0415 FSC, U0301, U0316 SBS/MRCC, U0442 TCM) may be set

CHEVROLET · 2025-01-10

This service bulletin provides information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

CHEVROLET · 2024-11-21

This service bulletin provides information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

CHEVROLET · 2024-10-14

This service bulletin provides information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

CHEVROLET, GMC · 2024-08-27

This technical bulletin provides a procedure to correct the condition of Intermittent No Power or Vehicle will Hesitate DTC P0700, P0EFF, U1611, U0401.

CHEVROLET · 2024-06-29

This service bulletin provides information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

CHEVROLET · 2024-05-30

This service bulletin provides information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

CHEVROLET · 2024-02-07

This service bulletin provides repair information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

CHEVROLET · 2024-01-31

This service bulletin provides repair information to correct a customer concern of Check Engine Light or Malfunction Indicator Lamp Illuminated with DTCs U0401 and/or U1611 Set.

POLARIS · 2023-05-04

Polaris has determined that some Model Year 2023 Slingshot vehicles, produced between December 2022 and March 2023, could be missing the 9th digit of the model number in the ECM. The 9th digit is used for activation of headlight fault codes on U.S. Models, and if incorrect, can result in a U0401 fault and chassis warning light. However, this specific fault does not affect normal function of the vehicle. To address this concern, Slingshot has released this Bulletin with instructions to update affected vehicles through the Vehicle Update process in Digital Wrench II.

BENTLEY · 2022-11-04

Transmission DTC - U040100 50273/C461 (Invalid Data Received From ECM/PCM A) Technical Background: -During Adaptive Cruise Control (ACC) brake to stop events, it is possible for the brake pressure to decay at a rate outside of specified parameters, DTC U040100 50273/C461 (Invalid Data Received From ECM/PCM A) will therefor be stored within the transmission control unit

BENTLEY · 2021-09-10

Transmission DTC - U040100 50273/C461 Invalid Data Received From ECM/PCM "A" Customer statement / workshop findings: Diagnostic Trouble Code (DTC) U040100 50273/C461 Invalid Data Received From ECM/PCM "A" stored within the Transmission Control Unit. Technical background: During Adaptive Cruise Control (ACC) brake to stop events, it is possible for the brake pressure to decay at a rate outside of specified parameters, DTC - U040100 50273/C461 Invalid Data Received From ECM/PCM "A" will therefore be stored within the Transmission Control Unit.

MAZDA · 2021-05-24

Some customers may experience an instrument cluster warning message "Safety and Driver Support Systems Partially Disabled" and DTC U0401:68 [VEHICLE CONTROL MODULE (US)] (Error signal received from PCM, DSC HU/CM, instrument cluster, or body control module (BCM)) stored. This may be caused by the customer riding the brake pedal.

FORD · 2021-03-09

Some 2019-2020 Mustang vehicles equipped with a 5.0L engine and a MT82 manual transmission may exhibit a concern of inoperative reverse camera and inoperative reverse lights. The vehicle will also exhibit messages in the IPC warning various driver assist systems not available and/or DTCs P086A, P086B, P086C, P086D, P086E, P08AE, P08AF, P08B0, P08B2, P095A, P095B, P095C, and/or P095D stored in the powertrain control module (PCM) with or without an illuminated powertrain malfunction (wrench) indicator. DTC U0401 may also be present in the anti-lock braking system (ABS) module, side obstacle detection control module LH (SODL), side obstacle detection control module RH (SODR), image processing module A (IPMA) and/or parking aid module (PAM). This may be due to a concern with the gear shift…

BENTLEY · 2020-10-30

Transmission DTC - U040100 50273/C461 Invalid Data Received From ECM/PCM A. Customer statement / workshop findings: Diagnostic Trouble Code (DTC) U040100 50273/C461 Invalid Data Received From ECM/PCM "A" stored within the Transmission Control Unit. Technical background: During Adaptive Cruise Control (ACC) brake to stop events, it is possible for the brake pressure to decay at a rate outside of specified parameters, DTC - U040100 50273/C461 Invalid Data Received From ECM/PCM "A" will therefore be stored within the Transmission Control Unit. When the DTC is stored the Customer will not be aware, there will be no warning from the Driver Instrument Panel (DIP) and no effect on performance of the vehicle.

BENTLEY · 2020-09-08

Transmission DTC - U040100 50273/C461 Invalid Data Received From ECM/PCM 'A'. Customer statement / workshop findings: Diagnostic Trouble Code (DTC) U040100 50273/C461 Invalid Data Received From ECM/PCM "A" stored within the Transmission Control Unit. Technical background: During Adaptive Cruise Control (ACC) brake to stop events, it is possible for the brake pressure to decay at a rate outside of specified parameters, DTC - U040100 50273/C461 Invalid Data Received From ECM/PCM "A" will therefore be stored within the Transmission Control Unit. When the DTC is stored the Customer will not be aware, there will be no warning from the Driver Instrument Panel (DIP) and no effect on performance of the vehicle. Measure: If the DTC is found to be stored within the Transmission Control Unit check…

FORD · 2020-09-03

Some 2020 Escape vehicles may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTCs) U0100, U0401, P166B, P1753, P0929, and/or P0919. The vehicle may also exhibit an illuminated powertrain malfunction (wrench) indicator lamp. This may be due to the software in the gear shift module (GSM). To correct the condition, reprogram the GSM using the latest software level of the appropriate Ford diagnostic scan tool. For claiming, use causal part number 7P155 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.

FORD · 2020-02-19

SSM 48563 - 2017-2020 F-150 - No Crank/No Start, Multiple Illuminated Warning Indicators And/Or DTCs Some 2017-2020 F-150 vehicles may exhibit a no crank/no start, auto start stop inoperative, illuminated malfunction indicator lamp (MIL) and/or powertrain malfunction indicator lamp, transmission shift concerns, diagnostic trouble codes (DTCs) P061A, U0140, U0401, U0101, U0074 and/or U0037 being set in the powertrain control module (PCM), transmission control module (TCM), instrument panel cluster (IPC), front controls interface module (FCIM), anti-lock braking system (ABS) module and/or power steering control module (PSCM). This may be due to the 15525 transmission wire harness not being properly secured. Visually inspect the harness for possible damage and proper routing at the rear of…

MAZDA · 2020-01-10

INSTRUMENT CLUSTER WARNING MESSAGE "SAFETY AND DRIVER SUPPORT SYSTEMS PARTIALLY DISABLED" AND DTC U0401:68 IS STORED:Some customers may experience an instrument cluster warning message "Safety and Driver Support Systems Partially Disabled" and DTC U0401:68 [VEHICLE CONTROL MODULE (US)] (Error signal received from PCM, DSC HU/CM, instrument cluster, or body control module (BCM)) stored. This may be caused by the customer riding the brake pedal.

CADILLAC, CHEVROLET, GMC · 2019-06-14

This Preliminary Information communication provides information to the technician about vehicle with Service ABS and/or Traction control lights/message on, Service Power Steering System, Service Suspension System, and or Loss of communication with EBCM, SWPS, PSCM, and/or SCM. Technician may find Diagnostic Trouble Codes U0077, U0121, U0126, U0131, U0139, U0401, U0415, and/or U0428. Technician should remove the driver and passenger sill plate to gain access to the wire harness. If any open, damaged, or corroded wires should be repaired.

MAZDA · 2019-05-13

Some vehicles may display some (or all) of the following symptoms: Check engine light on wit DTC P061B Surging on acceleration Transmission will not shift past 4th gear Various U codes (U0401 ABS, U0401, U0415 FSC, U0301, U0316 SBS/MRCC, U0442 TCM) may be set

MAZDA · 2019-02-28

Some vehicles may display some (or all) of the following symptoms: Check engine light on wit DTC P061B, Surging on acceleration, Transmission will not shift past 4th gear, Various U codes (U0401 ABS, U0401, U0415 FSC, U0301, U0316 SBS/MRCC, U0442 TCM) may be set.

FORD · 2018-11-08

Some 2018-2019 F-Super Duty vehicles equipped with a 6.7L engine built on 1-Dec-2017 and through 1-Aug-2018 may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P2122, P2127, U0401, U0109, P0480, P008A, P025C, P027A and/or P064A. This may be due to powertrain control module (PCM) connector C1232B not being properly seated to the PCM.

MAZDA · 2018-10-23

Some vehicles may experience a lack of power and the check engine light on with DTC P061B:00 and U0401:00 stored in the PCM memory when engine cranking is interrupted and on A/T vehicles, DTC U0442:00 is also stored. This concern most likely occurs when the brake pedal is released during engine cranking. DTC P061B:00 - [PCM] Internal control module torque calculation performance problem. DTC U0401:00 - Signal error from PCM DTC U0442:00 - [TCM] Invalid data received from PCM. Due to an improper control logic of the PCM, the engine torque calculation error detection is too sensitive. To eliminate this concern, the PCM software has been modified.

MAZDA · 2018-07-30

Some vehicles may exhibit an engine misfire during acceleration with the check engine light flashing and the following DTC(s). P0302:00 - Cylinder No.2 misfire detected and/or P0303:00 - Cylinder No.3 misfire detected NOTE: Even if a misfire occurred, the DTCs may not be stored because they are set after the continuous misfire occurred for 2 drive cycles. In this case, check if the following information is available to verify if the vehicle is applicable to this Service Information. The customer states that the misfire occurred and at the same time the check engine light started flashing. DTC U0401:00 ((ABS) Signal error from PCM) is detected.This concern may be caused if the exhaust manifold variable valve shaft (1) is out of alignment and/or the exhaust manifold variable valve housing…

FORD · 2018-07-26

Some 2018 F-Super Duty vehicles equipped with a 6.7L engine built on 1-Dec-2017 and through 8-Jul-2018 may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P2122, P2127, U0401, U0109, P0480, P008A, P025C, P027A and/or P064A. This may be due to powertrain control module (PCM) connector C1232B not being properly seated to the PCM.

CADILLAC, CHEVROLET, GMC · 2018-06-12

This Preliminary Information communication provides information to the technician about vehicle with Service ABS and/or Traction control lights/message on, Service Power Steering System, Service Suspension System, and or Loss of communication with EBCM, SWPS, PSCM, and/or SCM. Technician may find Diagnostic Trouble Codes U0077, U0121, U0126, U0131, U0139, U0401, U0415, and/or U0428. Technician should remove the driver and passenger sill plate to gain access to the wire harness. If any open, damaged, or corroded wires should be repaired.

MAZDA · 2018-04-27

Some vehicles may exhibit an engine misfire during acceleration with the check engine light flashing and the following DTC(s). P0302:00 - Cylinder No.2 misfire detected and/or P0303:00 - Cylinder No.3 misfire detected NOTE: Even if a misfire occurred, the DTCs may not be stored because they are set after the continuous misfire occurred for 2 drive cycles. In this case, check if the following information is available to verify if the vehicle is applicable to this Service Information. The customer states that the misfire occurred and at the same time the check engine light started flashing. DTC U0401:00 ((ABS) Signal error from PCM) is detected. This concern may be caused if the exhaust manifold variable valve shaft (1) is out of alignment and/or the exhaust manifold variable valve housing…

MAZDA · 2018-03-29

Some vehicles may exhibit an engine misfire during acceleration with the check engine light flashing and the following DTC(s). P0302:00 - Cylinder No.2 misfire detected and/or P0303:00 - Cylinder No.3 misfire detected. NOTE: Even if a misfire occurred, the DTCs may not be stored because they are set after the continuous misfire occurred for 2 drive cycles. In this case, check if the following information is available to verify if the vehicle is applicable to this Service Information. The customer states that the misfire occurred and at the same time the check engine light started flashing. DTC U0401:00 ((ABS) Signal error from PCM) is detected. This concern may be caused if the exhaust manifold variable valve shaft (1) is out of alignment and/or the exhaust manifold variable valve housing…

FORD · 2018-02-21

Some 2017-2018 F-150 vehicles built on or before 29-Sep-2017 may exhibit a no crank/no start, auto-start-stop inoperative, illuminated malfunction indicator lamp (MIL) and or powertrain malfunction indicator lamp, transmission shift issues, DTC P061A, U0140, U0401, U0101, U0074 and/or U0037 being set in the PCM, TCM, IPC, FCIM, ABS and/or PSCM. This may be due to the 15525 transmission wire harness not being properly secured. Visually inspect the harness for possible damage and proper routing at the rear of the engine down to the transmission. Repair as necessary. If no damage is found, proceed with normal diagnostics.