Engine-CodesCadillac – P1272 Cadillac

P1272 Cadillac Code - Accelerator Pedal Position Sensor 2-3 Correlation

Quick Answer

The P1272 Cadillac diagnostic trouble code indicates a problem with the correlation between the Accelerator Pedal Position Sensor 2 and Sensor 3. Common causes include Faulty Accelerator Pedal Position Sensors, Wiring issues or loose connections in the sensor circuit, Malfunctioning ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1272 Cadillac indicates Accelerator Pedal Position Sensor 2-3 Correlation.
Common causes
Common causes include Faulty Accelerator Pedal Position Sensors, Wiring issues or loose connections in the sensor circuit, Malfunctioning ECM.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1272 Cadillac Description

The P1272 Cadillac diagnostic trouble code indicates a problem with the correlation between the Accelerator Pedal Position Sensor 2 and Sensor 3. The Accelerator Pedal Position Sensor (APPS) is a vital component in modern vehicles that helps control the engine's throttle and acceleration. Sensor 2 and Sensor 3 are two separate sensors that work together to provide accurate data to the Engine Control Module (ECM) regarding the position of the accelerator pedal.

OBDII Code P1272 Cadillac - Accelerator Pedal Position Sensor 2-3 Correlation
P1272 Cadillac Code - Accelerator Pedal Position Sensor 2-3 Correlation

Common Causes of P1272 Cadillac

  1. Faulty Accelerator Pedal Position Sensors
  2. Wiring issues or loose connections in the sensor circuit
  3. Malfunctioning ECM
  4. Environmental factors such as moisture or corrosion affecting sensor performance
  5. Mechanical damage to the sensors due to wear and tear

Symptoms of P1272 Cadillac

  1. Hesitation or lack of response when pressing the accelerator pedal
  2. Rough idling or engine misfires
  3. Reduced engine power and poor acceleration
  4. Illuminated Check Engine Light
  5. Stalling or difficulty starting the vehicle

How to Fix P1272 Cadillac

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the trouble codes and confirm the issue.
  2. Inspect the wiring harness and connectors associated with the Accelerator Pedal Position Sensors for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the functionality of Sensor 2 and Sensor 3 using a multimeter to ensure they are providing accurate readings.
  4. If the sensors are found to be faulty, replace them with new, OEM-quality sensors.
  5. Clear the trouble codes from the ECM's memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1272 Cadillac

The cost of repairing a P1272 Cadillac code can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the cost of replacing the Accelerator Pedal Position Sensors can range from $150 to $300 per sensor, with an additional cost for labor. The total repair cost, including parts and labor, may range from $300 to $600. It is important to note that labor rates at auto repair shops can vary, so it is recommended to obtain quotes from multiple sources to get an accurate estimate for your specific vehicle.

When is the Code Detected?

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

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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