Engine-CodesGMC – P061C 2015 GMC Sierra

P061C 2015 GMC Sierra Code - Control Module Engine Speed System Circuitry Performance

Quick Answer

The P061C diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Control Module Engine Speed System Circuitry Performance. Common causes include Faulty crankshaft position sensor: A malfunctioning sensor can provide incorrect engine speed signals to the ECM, Faulty camshaft position sensor: Similar to the crankshaft sensor, a faulty camshaft sensor can lead to inaccurate engine speed readings, Wiring issues: Damaged or corroded wiring connections between the sensors and the ECM can disrupt the signal transmission. 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
P061C 2015 GMC Sierra indicates Control Module Engine Speed System Circuitry Performance.
Common causes
Common causes include Faulty crankshaft position sensor: A malfunctioning sensor can provide incorrect engine speed signals to the ECM, Faulty camshaft position sensor: Similar to the crankshaft sensor, a faulty camshaft sensor can lead to inaccurate engine speed readings, Wiring issues: Damaged or corroded wiring connections between the sensors and the ECM can disrupt the signal transmission.
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 14, 2024
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Code P061C 2015 GMC Sierra Description

The P061C diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Control Module Engine Speed System Circuitry Performance. This code is typically triggered when the engine control module (ECM) detects a discrepancy in the engine speed signal from the crankshaft position sensor and the camshaft position sensor. The ECM uses these signals to determine the engine speed and adjust fuel injection and ignition timing accordingly. When the ECM detects a performance issue in the circuitry related to these sensors, it can lead to various drivability issues and potentially affect the overall performance of the vehicle.

OBDII Code P061C 2015 GMC Sierra - Control Module Engine Speed System Circuitry Performance
P061C 2015 GMC Sierra Code - Control Module Engine Speed System Circuitry Performance

Common Causes of P061C 2015 GMC Sierra

  1. Faulty crankshaft position sensor: A malfunctioning sensor can provide incorrect engine speed signals to the ECM.
  2. Faulty camshaft position sensor: Similar to the crankshaft sensor, a faulty camshaft sensor can lead to inaccurate engine speed readings.
  3. Wiring issues: Damaged or corroded wiring connections between the sensors and the ECM can disrupt the signal transmission.
  4. ECM malfunction: A problem with the engine control module itself can cause performance issues in the engine speed system circuitry.
  5. Poor electrical connections: Loose or poor electrical connections can lead to intermittent signal disruptions.

Symptoms of P061C 2015 GMC Sierra

  1. Engine misfires: Due to incorrect fuel injection or ignition timing adjustments.
  2. Reduced engine power: The vehicle may experience a loss of power during acceleration.
  3. Rough idling: The engine may run unevenly or stall at idle.
  4. Check Engine Light: The illumination of the Check Engine Light on the dashboard.
  5. Poor fuel efficiency: The vehicle may consume more fuel than usual due to inefficient engine performance.

How to Fix P061C 2015 GMC Sierra

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the crankshaft and camshaft sensors, wiring, and ECM.
  2. Replace faulty sensors: If the sensors are found to be faulty, replace them with new ones following manufacturer guidelines.
  3. Repair wiring: Repair or replace any damaged wiring connections between the sensors and the ECM.
  4. Check ECM functionality: Ensure that the engine control module is functioning correctly and reprogram if necessary.
  5. Clear codes and test drive: Clear the DTC from the ECM memory, and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P061C 2015 GMC Sierra

The typical repair costs for addressing a P061C code on a 2015 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary significantly, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as location, vehicle make and model, and engine type can also influence the overall repair costs.

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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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