Engine-CodesGMC – P0667 GMC

P0667 GMC Code - Control Module Temperature Sensor Performance

Quick Answer

The P0667 code for GMC vehicles indicates an issue with the Control Module Temperature Sensor's performance. Common causes include Faulty control module temperature sensor, Wiring or connector issues related to the sensor, Corrosion or damage to the sensor. 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
P0667 GMC indicates Control Module Temperature Sensor Performance.
Common causes
Common causes include Faulty control module temperature sensor, Wiring or connector issues related to the sensor, Corrosion or damage to the sensor.
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 09, 2024
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Code P0667 GMC Description

The P0667 code for GMC vehicles indicates an issue with the Control Module Temperature Sensor's performance. This sensor is responsible for monitoring the temperature of the control module and ensuring that it remains within the optimal operating range. When the sensor detects abnormal temperatures or malfunctions, it triggers the P0667 trouble code. This can lead to various performance issues within the vehicle's systems.

OBDII Code P0667 GMC - Control Module Temperature Sensor Performance
P0667 GMC Code - Control Module Temperature Sensor Performance

Common Causes of P0667 GMC

  1. Faulty control module temperature sensor
  2. Wiring or connector issues related to the sensor
  3. Corrosion or damage to the sensor
  4. Overheating of the control module
  5. Electrical system malfunctions

Symptoms of P0667 GMC

  1. Illumination of the Check Engine Light
  2. Fluctuating engine performance
  3. Unusual noises coming from the control module area
  4. Increased fuel consumption
  5. Reduced overall vehicle performance

How to Fix P0667 GMC

  1. Begin by using a diagnostic scanner to retrieve the trouble code and identify the specific issue with the control module temperature sensor.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion. Repair or replace any faulty components as needed.
  3. Check the control module's temperature and ensure it is within the recommended operating range. Address any overheating issues if present.
  4. Clear the trouble code from the vehicle's computer system and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, consult with a professional mechanic or dealership for further diagnosis and repairs.

Cost to Fix P0667 GMC

The typical repair costs for addressing a P0667 code related to the control module temperature sensor can vary depending on the specific issue and the vehicle's make and model. On average, the parts for this repair may cost between $50 and $150, while labor costs can range from $80 to $150 per hour. Overall, the total repair cost for this issue could be in the range of $150 to $500, including parts and labor. It's essential to consider that labor rates can vary based on the location and the repair shop's rates, so it's advisable to obtain a detailed estimate from a trusted mechanic before proceeding with the repair.

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Information for Specific GMC Models

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.

Frequently Asked Questions about P0667 GMC Code

1. What does the OBDII code P0667 mean on a GMC vehicle?

P0667 indicates an issue with the Control Module Temperature Sensor's performance, suggesting the sensor is reading outside normal parameters or is malfunctioning.

2. What are the common symptoms of code P0667 in a GMC?

Symptoms may include poor engine performance, reduced fuel efficiency, the Check Engine Light turning on, or irregular temperature readings.

3. What causes the P0667 code to appear on a GMC?

Possible causes include a faulty control module temperature sensor, wiring issues such as damaged or corroded connections, or a malfunctioning engine control module (ECM).

4. Can I still drive my GMC with the P0667 code active?

While the vehicle may still be drivable, ignoring the code can lead to engine performance issues or potential long-term damage. It's best to address the issue promptly.

5. How do I diagnose the P0667 code on a GMC?

Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the sensor and wiring for damage, and testing the sensor's resistance and voltage with a multimeter.

6. How do I fix the P0667 code on my GMC?

Repairs may include replacing the faulty temperature sensor, repairing or replacing damaged wiring, or reprogramming or replacing the ECM if necessary.

7. How much does it cost to fix the P0667 code on a GMC?

The cost varies depending on the repair, but replacing a temperature sensor or fixing wiring typically costs $100–$300, while ECM replacement can be significantly more.

8. Can a dirty or corroded connection trigger the P0667 code?

Yes, corroded or dirty electrical connections can disrupt the signal from the temperature sensor, triggering the code.

9. Does the P0667 code always mean the sensor is faulty?

Not necessarily. It could also result from wiring problems, a poor electrical connection, or an issue with the ECM.

10. Can I reset the P0667 code without repairs?

You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely reappear.

Discuss the causes and fixes for P0667 GMC OBDII Code

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