P1271 MINI – Electric Ambient Air Pressure Sensor

P1271 MINI Possible Causes

  • Faulty ambient air pressure sensor
  • Ambient air pressure sensor harness is open or shorted
  • Poor electrical connection in the ambient air pressure sensor circuit

How is P1271 MINI Code Repair Done?

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)

P1271 MINI Meaning

Electric ambient air pressure sensor is the generic description for Mini code P1271, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we have no further information about the P1271 Mini OBDII code.

P1271 NISSAN – Air Fuel Ratio Sensor 1 Bank 1 Circuit No Activity Detected

P1271 NISSAN 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 the P1271 NISSAN 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 approx. 0V.

Possible Symptoms

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

P1271 NISSAN Meaning

The A/F sensor is a planar dual-cell limit current sensor. The sensor 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 in the element.
The sensor is capable of accurately measuring λ=1, but also in the lean and rich range. 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 =1. Therefore, the A/F sensor is able to indicate the air/fuel ratio by this pumping current. Additionally, a heating element is built into the sensor to ensure the required operating temperature of 700 to 800°C (1,292 to 1,472°F).

P1271 VOLKSWAGEN – Injector 4 Control Limit Not Reached

P1271 VOLKSWAGEN Possible Causes

  • Control period too short
  • Low fuel level
  • Faulty fuel injector
  • Fuel injector harness is open or shorted
  • Poor electrical connection in fuel injector circuit

How is P1271 VOLKSWAGEN Code Repair Done?

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)

P1271 VOLKSWAGEN Meaning

Control Limit for Injector 4 Not Reached is the generic description for Volkswagen code P1271, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Volkswagen P1271 OBDII code.

P1272 – Air-Fuel Ratio Sensor 1 Bank 1 Circuit No Activity Detected

P1272 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 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.

Possible Symptoms

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

P1272 Meaning

The A/F sensor is a planar dual-cell limit current sensor. The A/F sensor’s sensing element is the combination of a Nernst concentration cell (sensor cell) with an oxygen pump cell, which transports ions. It has a heating element in the component.
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 =1. Therefore, the A/F sensor is capable of indicating the air/fuel ratio by this pumping current. Additionally, a heating element is built into the sensor to ensure the required operating temperature of 700 to 800°C (1,292 to 1,472°F).

P1272 NISSAN SENTRA – Air-Fuel Ratio Sensor 1 Bank 1 Circuit No Activity Detected

P1272 2002 NISSAN SENTRA 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 code P1272 2002 NISSAN SENTRA 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 approx. 0V.

Possible Symptoms

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

P1272 2002 NISSAN SENTRA Meaning

The A/F sensor is a planar dual-cell limit current sensor. The A/F sensor sensing element is the combination of a Nernst concentration cell (sensor cell) with an oxygen pump cell, which transports ions. It has a heating element in 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 outputs a clear, 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 exhaust gas composition in the diffusion gap remains constant at =1. Therefore, the A/F sensor is able to indicate the air/fuel ratio by this pumping current. Additionally, a heating element is built into the sensor to ensure the required operating temperature of 700 to 800°C (1,292 to 1,472°F).

P1272 ACURA – Throttle Pedal Position Sensor 2-3 Correlation

P1272 ACURA 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 the P1272 ACURA 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 ACURA 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 BUICK – Accelerator Pedal Position Sensor 2-3 Correlation

P1272 BUICK Possible Causes

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

How is P1272 BUICK 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 BUICK 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 depressed.

P1272 CADILLAC – Accelerator Pedal Position Sensor 2-3 Correlation

P1272 CADILLAC 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 P1272 CADILLAC 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 CADILLAC 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 CHEVROLET – Accelerator Pedal Position Sensor 2-3 Correlation

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 – Air Conditioning Clutch Control Circuit 2 Low

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.