P1275 - FAULT CODE - OBD2

POST UPDATED IN February, 2023

P1275 Code failures by brands

P1275 ACURA, BUICK, CADILLAC, CHEVROLET, GMC, HONDA, ISUZU: ACCELERATOR PEDAL POSITION SENSOR 1 CIRCUIT

Description of DTC code P1275

An APP sensor (accelerator pedal position sensor) is installed in the throttle electronics. This sensor monitors the position of the accelerator pedal and provides an electrical signal that opens the throttle body as the pedal is depressed.

The APP Sensor signals the engine how fast to drive while the pedal is depressed. It is located within the TAC (Throttle Control) Module assembly. If the pedal is depressed or released, an electrical signal is sent to the Engine Control Module (ECM). Then, it will communicate this to the fuel system.

Three individual Throttle Pedal Position Sensors are installed in the TAC Module and three signal circuits, reference circuits (5-volt reference), and low reference circuits are used to calculate the throttle position. If the APP 1 Sensor experiences erratic operation in its circuitry, Chevrolet, GMC, Honda, and other vehicles will set the DTC P1275 OBDII code.

Symptoms of fault code P1275

  • Check Engine light ON.
  • The driver does not have full throttle control.
  • Increases fuel consumption.

Causes of OBD2 P1275

The P1275 OBD2 fault code is stored for one or more of the following reasons:

  • Cables or connectors that are related to the APP 1 Sensor may be faulty.
  • The Accelerator Pedal Position Sensor circuit connections may be damaged, causing the circuit to malfunction.
  • The Accelerator Pedal Position Sensor may be in poor condition.

Possible solutions of the DTC code P1275

To troubleshoot the P1275 OBDII diagnostic code, try this:

  • Consult the Technical Service Bulletins.
  • Check for damage to the Accelerator Pedal Position Sensor connectors or wiring. If you discover conditions such as corrosion, burns, or wear, make corrections if necessary.
  • Measure the APP Sensor circuit voltages and verify that they do not exceed the limits set by the manufacturer. An out-of-range voltage requires repair.
  • Check that the Accelerator Pedal Position Sensor 1 is in good condition. Following the manufacturer's diagnostic steps, determine the integrity of the sensor. Replace if necessary.

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