P135D 2014 GMC Sierra Code - Cooling Fan 2 Status Signals Message Counter Incorrect
Quick Answer
The P135D diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect. Common causes include Faulty cooling fan control module: A malfunction in the control module responsible for operating the cooling fan can lead to incorrect signals being sent, Defective temperature sensor: A faulty temperature sensor may provide inaccurate readings to the cooling fan system, causing it to malfunction, Wiring issues: Damaged or corroded wiring connections can disrupt the communication between the cooling fan components, resulting in incorrect signals. 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
- P135D 2014 GMC Sierra indicates Cooling Fan 2 Status Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty cooling fan control module: A malfunction in the control module responsible for operating the cooling fan can lead to incorrect signals being sent, Defective temperature sensor: A faulty temperature sensor may provide inaccurate readings to the cooling fan system, causing it to malfunction, Wiring issues: Damaged or corroded wiring connections can disrupt the communication between the cooling fan components, resulting in incorrect signals.
- 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.
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Code P135D 2014 GMC Sierra Description
The P135D diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect. This code is specifically related to the cooling fan system in the vehicle. The cooling fan plays a crucial role in maintaining the optimal operating temperature of the engine by dissipating heat generated during combustion. When the engine reaches a certain temperature, the cooling fan is activated to help regulate the temperature and prevent overheating.
Common Causes of P135D 2014 GMC Sierra
- Faulty cooling fan control module: A malfunction in the control module responsible for operating the cooling fan can lead to incorrect signals being sent.
- Defective temperature sensor: A faulty temperature sensor may provide inaccurate readings to the cooling fan system, causing it to malfunction.
- Wiring issues: Damaged or corroded wiring connections can disrupt the communication between the cooling fan components, resulting in incorrect signals.
- Blown fuse: A blown fuse in the cooling fan circuit can prevent the fan from receiving power and functioning properly.
Symptoms of P135D 2014 GMC Sierra
- Engine overheating: One of the most common symptoms associated with this code is the engine running hotter than usual, which may lead to overheating.
- Cooling fan not turning on: The cooling fan may fail to activate when needed, causing the engine temperature to rise.
- Poor air conditioning performance: The air conditioning system may not work effectively if the cooling fan is not functioning properly.
- Check engine light: The vehicle's onboard diagnostic system may trigger the check engine light to alert the driver of a potential issue with the cooling fan system.
How to Fix P135D 2014 GMC Sierra
- Diagnose the issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the cooling fan system to identify the root cause of the problem.
- Test cooling fan operation: Check the cooling fan's functionality by applying power directly to the fan to ensure it turns on and off as expected.
- Replace faulty components: Replace any defective parts such as the cooling fan control module, temperature sensor, or damaged wiring to restore proper operation.
- Clear the trouble code: After repairing the issue, clear the DTC from the vehicle's memory using a diagnostic scanner to reset the check engine light.
- Test drive: Take the vehicle for a test drive to verify that the cooling fan operates correctly and that the engine temperature remains within the normal range.
Cost to Fix P135D 2014 GMC Sierra
The cost of repairing a P135D code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the parts and labor required for the repair. On average, the cost of replacing a cooling fan control module or temperature sensor can range from $200 to $500, including parts and labor. Wiring repairs or fuse replacements may cost less, typically ranging from $50 to $150. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. For a more accurate cost estimate, it's recommended to consult with a local auto repair shop.
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