P2138 · Communications du constructeur

FORD · 2026-07-27

Some 2025-2026 Bronco/Ranger vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM). The vehicle may or may not exhibit a perceived lack of power intermittently. This may be due to an issue with the following connectors associated with the accelerator pedal position (APP) sensor circuits: -C115B -C175B -C2040 Replacement of the accelerator pedal may not resolve this concern. Perform a wiggle test of the connectors while the engine is at normal operating temperature. Perform a visual inspection of the connectors as well as a terminal fit test using the appropriately sized flex probe. Repair as necessary. Refer to Wiring Diagram Cell 005. If no…

FORD · 2025-02-12

Some 2023-2025 F-Super Duty vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM).

FORD · 2024-10-08

Some 2021-2024 F-150 non-Lightning vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM).

FORD · 2024-04-05

Some 2023-2024 F-Super Duty vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM). The vehicle may or may not exhibit a perceived lack of power intermittently. Perform a wiggle test of connector C1580 at the left rear of the engine compartment while the engine is at normal operating temperature. Perform a visual inspection of pins 18 through 29 as well as a terminal fit test using the appropriately sized flex probe. Repair as necessary. Refer to Wiring Diagram Cell 005. If no concerns are found, refer to Workshop Manual (WSM), Section 310-02 for normal diagnostics.

BUICK, CHEVROLET · 2020-06-19

Special Coverage Adjustment - Certain 2016-2018 model year Chevrolet Malibu, 2017-2018 model year Buick LaCrosse, and 2018 model year Buick Regal vehicles may have a condition which affects the electrical connection to one of the vehicle?s accelerator pedal position sensors. If this electrical connection is interrupted, the accelerator pedal will still function, but the vehicle will enter a reduced engine power mode in which the vehicle?s maximum acceleration and torque are reduced. Additionally, the Malfunction Indicator Light (Check Engine Light) will illuminate, the ?Engine Power is Reduced? message will display, and a diagnostic trouble code for Accelerator Pedal Position Sensor Correlation (P2138) will be set when this condition occurs. Dealers are to replace the accelerator pedal…

BUICK, CHEVROLET · 2019-08-15

Certain 2016-2018 model year Chevrolet Malibu, 2017-2018 model year Buick LaCrosse, and 2018 model year Buick Regal vehicles may have a condition which affects the electrical connection to one of the vehicle?s accelerator pedal position sensors. If this electrical connection is interrupted, the accelerator pedal will still function, but the vehicle will enter a reduced engine power mode in which the vehicle?s maximum acceleration and torque are reduced. Additionally, the Malfunction Indicator Light (Check Engine Light) will illuminate, the ?Engine Power is Reduced? message will display, and a diagnostic trouble code for Accelerator Pedal Position Sensor Correlation (P2138) will be set when this condition occurs. Dealers are to replace the accelerator pedal and position sensor assembly as…

TRIUMPH · 2019-01-29

Technical Bulletin 194 provides instructions that apply to Front Master Cylinder Reservoir Cap Screws, Windscreen Support Fixings, Keyless Ignition, Clutch Cover Removal and Installation, Rider's Seat (single seat), Side Stand Spring Peg, Cylinder Head Installation, Alternator Oil Feed Spray Jet, Headlight and Indicator Wiring Harness Routing, Transmission Output Shaft, Horn Wire Routing, Instrument Downloads - 900cc and 1200cc Modern Classic Models with Analogue/LCD Instruments, Pinpoint Test - Engine Start/Stop Switch Correlation Error, Diagnostic Trouble Code (DTC) P2138 - Twist Grip Position Sensor 1 Correlation Error with Twist Grip Position Sensor 2, Electronic Systems Commissioning and Motorcycle Unlocking and Battery Anti-Tamper Label.

BUICK, CHEVROLET · 2018-08-28

Special Coverage. Certain vehicles may have a condition which affects the electrical connection to one of the vehicle?s accelerator pedal position sensors. If this electrical connection is interrupted, the accelerator pedal will still function, but the vehicle will enter a reduced engine power mode in which the vehicle?s maximum acceleration and torque are reduced. Additionally, the Malfunction Indicator Light (Check Engine Light) will illuminate, the ?Engine Power is Reduced? message will display, and a diagnostic trouble code for Accelerator Pedal Position Sensor Correlation (P2138) will be set when this condition occurs. Dealers are to replace the accelerator pedal and position sensor assembly as necessary and repair the engine wire harness (Malibu LFV only). The repairs will be made…

BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB, SATURN · 2017-11-17

This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set.

FORD · 2017-10-23

Some 2017 F-Super Duty vehicles built on or before 28-Aug-2017, may exhibit an intermittent loss of throttle pedal response, illuminated wrench, hill descent, airbag, anti-lock brake system (ABS) and/or advanced trac warning indicators and/or P2122, P2123, P2124, P2125, P2127, P2128, and/or P2138 DTCs. This may be caused by the Accelerator Pedal Position (APP) sensor 14A005 harness being improperly routed behind the brake booster to brake pedal bracket. If the harness is improperly routed, loosen the bracket to free the harness, refer to Workshop Manual (WSM), section 206-06 and inspect for any damaged circuits. If the harness is properly routed, proceed with normal diagnostics.

FORD · 2017-09-20

Some 2015-2017 F-150 vehicles may experience intermittent loss of throttle pedal response, illuminated wrench, hill descent, airbag, anti lock brake system(ABS) and/or advanced trac warning indicators and/or P2122, P2123, P2124, P2125, P2127, P2128 and/or P2138 DTCs. This may be caused by the Accelerator Pedal Position (APP) Sensor 14A005 harness being improperly routed behind the brake booster to brake pedal bracket. If the harness is improperly routed, loosen the bracket to free the harness, refer to Workshop Manual (WSM), Section 206-06. Inspect and repair damaged circuits before properly routing the harness. If the harness is properly routed, proceed with normal diagnostics.

MAZDA · 2017-01-13

Check engine light (with DTCs P0101, P061B, P2122, P2138) may illuminate after PCM reprogramming due to a mislogic detection in the PCM calibration, available in the current IDs version 103.03. Please uninstall IDS and install version 103.00 to prevent this situation and "do not update ids until further notice"

FORD · 2016-10-19

SOME 2015-2016 F-150 VEHICLES MAY EXPERIENCE INTERMITTENT LOSS OF THROTTLE PEDAL RESPONSE, ILLUMINATED WRENCH, HILL DESCENT, AIRBAG, ANTI LOCK BRAKE SYSTEM(ABS) AND/OR ADVANCED TRAC WARNING INDICATORS AND/OR P2122, P2123, P2124, P2125, P2127, P2128 AND/OR P2138 DTCS. THIS MAY BE CAUSED BY THE ACCELERATOR PEDAL POSITION (APP) SENSOR 14A005 HARNESS BEING IMPROPERLY ROUTED BEHIND THE BRAKE BOOSTER TO BRAKE PEDAL BRACKET. IF THE HARNESS IS IMPROPERLY ROUTED, LOOSEN THE BRACKET TO FREE THE HARNESS. INSPECT AND REPAIR DAMAGED CIRCUITS BEFORE PROPERLY ROUTING THE HARNESS. IF THE HARNESS IS PROPERLY ROUTED, PROCEED WITH NORMAL DIAGNOSTICS IN THE WORKSHOP MANUAL (WSM).

CADILLAC, CHEVROLET, GMC · 2015-10-29

This Preliminary Information communication provides information to the technician about vehicles that may have Service Engine Soon Malfunction Indicator Lamp on or reduced power message. Technician may find Diagnostic Trouble Codes P0106, P0107, P0697, P2122, P2123, P2127, P2128 and P2138. Technician should follow published Service Information diagnostics for the Diagnostic Trouble Codes that have set, if it is inconclusive inspect the wiring harness near the left instrument panel junction block. Technician will need to repair the damaged wiring.

BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB, SATURN · 2015-06-23

This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set.

CHEVROLET, GMC, HUMMER, SAAB, SATURN · 2015-06-01

GENERAL MOTORS: INTERMITTENT MIL/SES/ DTC P2138 WITH REDUCED ENGINE POWER (REPAIR INSTRUMENT PANEL (IP) TO BODY HARNESS CONNECTOR). 2005-08 GM PASSENGERS CARS/LIGHT DUTY TRUCKS (INCL. SATURNS). *PE UPDATED 11/5/10. *PE UPDATED 4/4/11. *PE UPDATED 2/3/16. *PE

CADILLAC · 2015-01-20

EMISSION RECALL (REVISED ORDERING INFORMATION). GENERAL MOTORS HAS DECIDED TO CONDUCT A VOLUNTARY EMISSION RECALL INVOLVING CERTAIN 2014 MODEL YEAR CADILLAC ATS VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE ELECTRICAL TERMINALS ARE NOT PROPERLY CRIMPED TO THE ACCELERATOR PEDAL POSITION (APP) CIRCUITS AT THE ENGINE HARNESS SIDE OF AN INLINE ELECTRICAL CONNECTOR. IF THIS OCCURS, DIAGNOSTIC TROUBLE CODE (DTC) P2138 MAY SET AS A RESULT OF THE ASSOCIATED HIGH RESISTANCE, CAUSING BOTH TRACTION AND STABILITY CONTROL SYSTEMS TO BE DISABLED, REDUCED ENGINE POWER MODE OPERATION, AND THE MALFUNCTION INDICATOR LAMP (MIL) TO ILLUMINATE. DEALERS ARE TO INSPECT THE RELATED APP TERMINALS AND SOLDER THEM OR REPLACE THEM AS REQUIRED.

CADILLAC · 2014-09-05

14176A - EMISSIONS RECALL (REVISED PART INFORMATION). GENERAL MOTORS HAS DECIDED TO CONDUCT A VOLUNTARY EMISSION RECALL INVOLVING CERTAIN VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE ELECTRICAL TERMINALS ARE NOT PROPERLY CRIMPED TO THE ACCELERATOR PEDAL POSITION (APP) CIRCUITS AT THE ENGINE HARNESS SIDE OF AN INLINE ELECTRICAL CONNECTOR. IF THIS OCCURS, DIAGNOSTIC TROUBLE CODE (DTC) P2138 MAY SET AS A RESULT OF THE ASSOCIATED HIGH RESISTANCE, CAUSING BOTH TRACTION AND STABILITY CONTROL SYSTEMS TO BE DISABLED, REDUCED ENGINE POWER MODE OPERATION, AND THE MALFUNCTION INDICATOR LAMP (MIL) TO ILLUMINATE. DEALERS ARE TO INSPECT THE RELATED APP TERMINALS AND SOLDER THEM OR REPLACE THEM AS REQUIRED.

CADILLAC · 2014-08-15

14176 - EMISSIONS RECALL. GENERAL MOTORS HAS DECIDED TO CONDUCT A VOLUNTARY EMISSION RECALL INVOLVING CERTAIN VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE ELECTRICAL TERMINALS ARE NOT PROPERLY CRIMPED TO THE ACCELERATOR PEDAL POSITION (APP) CIRCUITS AT THE ENGINE HARNESS SIDE OF AN INLINE ELECTRICAL CONNECTOR. IF THIS OCCURS, DIAGNOSTIC TROUBLE CODE (DTC) P2138 MAY SET AS A RESULT OF THE ASSOCIATED HIGH RESISTANCE, CAUSING BOTH TRACTION AND STABILITY CONTROL SYSTEMS TO BE DISABLED, REDUCED ENGINE POWER MODE OPERATION, AND THE MALFUNCTION INDICATOR LAMP (MIL) TO ILLUMINATE. DEALERS ARE TO INSPECT THE RELATED APP TERMINALS AND SOLDER THEM OR REPLACE THEM AS REQUIRED.

CADILLAC, CHEVROLET, GMC · 2014-07-16

This Preliminary Information communication provides information to the technician about vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on or reduced engine power message. Technician may find Diagnostic Trouble Codes P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138. Technician will need to inspect the Accelerator Pedal Position circuits for poor terminal tension.

ACURA · 2014-03-12

ACURA: THE MALFUNCTION INDICATOR LAMP (MIL) IS ON, WITH DTC P2138 (ACCELERATOR PEDAL POSITION SENSOR A/B INCORRECT VOLTAGE CORRELATION), AND HAVE POOR PERFORMANCE IN ENGINE. MODEL 2004-2008 TL, TSX. *PE

CADILLAC · 2014-03-01

GM: THE MALFUNCTION INDICATOR LAMP IS ILLUMINATED WITH DTC P2138 OR P06A3. ENGINEER WOULD LIKE TO GATHER INFORMATION FROM THE VEHICLE PRIOR TO ANY ATTEMPTS TO REPAIR THE VEHICLE. *JS UPDATED 05/19/2014 *JS

ACURA · 2014-02-27

Dealer message - American Honda (AHM) is investigating certain 2004-2008 TLs & TSXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P2138 (Accelerator Pedal Position Sensor A/B Incorrect Voltage Correlation) stored and poor engine performance. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting any further repair of any kind.

ACURA · 2014-02-12

Dealer message - American Honda (AHM) is investigating certain 2004-2008 TLs & TSXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P2138 (Accelerator Pedal Position Sensor A/B Incorrect Voltage Correlation) stored and poor engine performance. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting any further repair of any kind.

ACURA · 2014-01-29

Dealer message - American Honda (AHM) is investigating certain 2004-2008 TLs & TSXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P2138 (Accelerator Pedal Position Sensor A/B Incorrect Voltage Correlation) stored and poor engine performance. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting any further repair of any kind.

ACURA · 2014-01-29

HONDA: SOME VEHICLES MAY DISPLAY A MALFUNCTION INDICATOR LAMP WITH THE STORED DTC P2138 (ACCELERATOR PEDAL POSITION SENSOR A/B INCORRECT VOLTAGE CORRELATION). THERE MAY ALSO BE POOR ENGINE PERFORMANCE. AHM IS ATTEMPTING TO COLLECT SPECIFIC PARTS FROM THE VEHICLE BEFORE ANY FURTHER EFFORT TOWARD REPAIRS. *JS

MERCEDES-BENZ · 2013-07-18

Engine in limp-home mode, engine diagnosis indicator lamp lights up, fault code P213862, P213864, P211271, P225113, P019122 or P019185 stored in control unit.

CADILLAC · 2013-02-01

This Preliminary Information communication provides information to the technician about vehicles that have Service Stabilitrak Message being displayed in the driver?s information center. Technician may find Diagnostic Trouble Code P1153, P1133, P1826, P1827, P2120, P2122, P2123, P2125, P2127, P2128, and P2138. Technician will need to inspect X104 to be rubbing on the cylinder head. Technician will repair any damaged wires and reroute the wire harness.

SUZUKI · 2010-11-01

SUZUKI VEHICLES: COUNTER MEASURE PROCEDURE FOR DTC P2138. MIL LIGHT IS ON, DTC P2138 STORED. FAILURE OF THE CONNECTOR AND/OR WIRING CIRCUITS BETWEEN THE ECM AND THE ACCELERATOR PEDAL POSITION SENSOR. MODELS FORENZA, FORENZA WAGON AND RENO (RQ420). *PE

SAAB · 2010-08-01

SAAB: ACCELERATOR PEDAL POSITION SENSOR DTCS SET IN ECM 2003-2009 SAAB. APP SENSOR DTC'S OF P2122-00, P2123-00, P2126-00, P2127-00, P2128-00, AND/OR P2138-00 IN THE ECM. THESE DTC'S MAY BE VERY INTERMITTENT AND ARE DIFFICULT TO REPRODUCE. THE APP SENSOR, T8, AND/OR ENGINE HARNESS MAY HAVE BEEN REPLACED WITH NO CHANGE TO THE CONDITION. *PE