P1272 CHEVROLET Possible Causes

• Faulty Accelerator Pedal Position (APP)
• Accelerator Pedal Position harness is open or shorted
• Poor electrical connection in the Accelerator Pedal Position circuit

How is the P1272 CHEVROLET code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the code detected?

The Engine Control Module (ECM) compared the signal from the two Accelerator Pedal Position (APP) sensors and detected a voltage difference.

Possible Symptoms

• Engine light on (or Service Engine Soon warning light)

P1272 CHEVROLET Meaning

The Accelerator Pedal Position (APP) sensors are located in the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted on the accelerator pedal bracket. There are 3 individual APP sensors in the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is pressed.

P1272 CHRYSLER Possible Causes

• Faulty air conditioning compressor clutch
• Air conditioning compressor clutch circuit open or shorted
• Poor electrical connection in the air conditioning compressor clutch circuit

How is the P1272 CHRYSLER code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check Engine Light On (or Service Engine Soon Warning Light)

P1272 CHRYSLER Meaning

Air Conditioning Clutch Control Circuit 2 Low (TIPM). The Engine Control Module (ECM) has detected an open or short circuit in the AC clutch relay control circuit.

P1272 DODGE Possible Causes

• Faulty air conditioning compressor clutch
• Air conditioning compressor clutch circuit is open or shorted
• Poor electrical connection in the air conditioning compressor clutch circuit

How is the P1272 DODGE code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check Engine Light on (or Service Engine Soon warning light)

P1272 DODGE Meaning

Air Conditioning Clutch Control Circuit 2 Low (TIPM). The Engine Control Module (ECM) has detected an open or short circuit in the AC clutch relay control circuit.

P1272 FORD Possible Causes

• Faulty fuel injector
• Faulty Injector Driver Module (IDM)
• Fuel injector harness is open or shorted
• Poor electrical connection in the fuel injector circuit

How is P1272 FORD Code Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1272 FORD Meaning

The Injector Driver Module (IDM) is capable of detecting individual injector open circuits and short circuits to ground or power while the engine is running. The Injector Driver Module is also capable of detecting open circuits or short circuits in the right or left bank high side circuit. The Diagnostic Trouble Code (DTC) indicates a low to high side open circuit between the Injector Driver Module and the injector.

P1272 GMC Possible Causes

• Faulty accelerator pedal position (APP) sensor
• Accelerator pedal position harness is open or shorted
• Poor electrical connection in the accelerator pedal position circuit

How is GMC Code P1272 Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The Engine Control Module (ECM) compared the signal from the two accelerator pedal position (APP) sensors and detected a voltage difference.

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1272 GMC Meaning

The accelerator pedal position (APP) sensors are located in the throttle actuator control (TAC) module assembly. The TAC module assembly is mounted on the accelerator pedal bracket. There are 3 individual APP sensors in the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is pressed.

P1272 HONDA Possible Causes

• Faulty Accelerator Pedal Position (APP)
• Accelerator Pedal Position harness is open or shorted
• Poor electrical connection in the Accelerator Pedal Position circuit

How is HONDA Code P1272 Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The Engine Control Module (ECM) compared the signal from the two Accelerator Pedal Position (APP) sensors and detected a voltage difference.

Possible Symptoms

• Engine Light On (or Service Engine Soon warning light)

P1272 HONDA Meaning

The Accelerator Pedal Position (APP) sensors are located in the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted on the accelerator pedal bracket. There are 3 individual APP sensors in the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is pressed.

P1272 INFINITI Possible Causes

• Faulty Air/Fuel Ratio (A/F) Sensor 1, Bank 1
• Air/Fuel Ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
• Air/Fuel Ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection

How is P1272 INFINITI Code Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The A/F signal calculated by the ECM from the A/F Sensor 1 signal is constantly about 0V.

Possible Symptoms

• Engine Light On (or Service Engine Soon Warning Light)
• Possible rough engine idle

P1272 INFINITI Meaning

The A/F sensor is a planar dual-cell limit current sensor. The sensing element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen pump cell, which transports ions. It has a heating element within the element.
The sensor is capable of accurately measuring λ=1, but also in the lean and rich ranges. With its control electronics, the sensor emits a clear and continuous signal over a wide λ range (0.7 < λ < air).
The exhaust gas components diffuse through the diffusion gap at the oxygen pump electrode and the Nernst concentration cell, where they are brought to thermodynamic equilibrium.
An electronic circuit controls the pump current through the oxygen pump cell so that the composition of the exhaust gases in the diffusion gap remains constant at λ=1. Therefore, the A/F sensor is able to indicate the air/fuel ratio by this pumping current. Additionally, a heating element is integrated into the sensor to ensure the required operating temperature of 700 to 800°C (1,292 to 1,472°F).

P1272 ISUZU Possible Causes

• Faulty Accelerator Pedal Position (APP)
• Accelerator Pedal Position Harness is Open or Shorted
• Poor Electrical Connection of the Accelerator Pedal Position Circuit

How is P1272 ISUZU Code Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The Engine Control Module (ECM) compared the signal from the two Accelerator Pedal Position (APP) sensors and detected a voltage difference.

Possible Symptoms

• Engine Light On (or Service Engine Soon Warning Light)

P1272 ISUZU Meaning

The Accelerator Pedal Position (APP) sensors are located in the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted on the accelerator pedal bracket. There are 3 individual APP sensors in the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is pressed.

P1272 JEEP Possible Causes

• Faulty air conditioning compressor clutch
• Air conditioning compressor clutch circuit is open or shorted
• Poor electrical connection in the air conditioning compressor clutch circuit

How is P1272 JEEP code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check Engine Light on (or Service Engine Soon warning light)

P1272 JEEP Meaning

Air conditioning clutch control circuit 2 low (TIPM). The Engine Control Module (ECM) has detected an open or short circuit in the AC clutch relay control circuit.

P1272 LEXUS Possible Causes

• Clogged fuel filter
• Fuel leak
• Faulty pressure regulator valve
• Pressure regulator valve harness is open or shorted
• Poor electrical connection in the pressure regulator valve circuit
• Faulty fuel injector
• Faulty engine control module (ECM)

How is the P1272 LEXUS code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check engine light on (or service engine soon warning light)

P1272 LEXUS Meaning

With a cold engine, the internal pressure of the common rail is regulated by the pressure regulator valve of the common rail assembly. With a hot engine, it is regulated by the intake regulator valve of the fuel supply pump. When the engine is running under low load, it is regulated by both the pressure regulator valve and the intake regulator valve. Based on signals from the engine control module (ECM), the pressure control valve opens when a sudden deceleration occurs to prevent fuel pressure from becoming too high. The diagnostic trouble code (DTC) is set when the engine control module has determined that the fuel rail pressure does not meet factory specifications.