Engine-CodesChevrolet – P135D 2014 Chevrolet Silverado

P135D 2014 Chevrolet Silverado Code - Cooling Fan 2 Status Signals Message Counter Incorrect

Quick Answer

The diagnostic trouble code P135D for a 2014 Chevrolet Silverado indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect. Common causes include Faulty cooling fan motor, Defective cooling fan relay, Wiring or connection issues. 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 Chevrolet Silverado indicates Cooling Fan 2 Status Signals Message Counter Incorrect.
Common causes
Common causes include Faulty cooling fan motor, Defective cooling fan relay, Wiring or connection issues.
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 Aug 18, 2024
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Code P135D 2014 Chevrolet Silverado Description

The diagnostic trouble code P135D for a 2014 Chevrolet Silverado indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect. This means that the control module is not receiving the expected number of signals from the cooling fan 2, leading to potential overheating issues. The cooling fan plays a crucial role in regulating the engine's temperature by dissipating heat, and any malfunction in the cooling fan system can result in engine overheating, reduced performance, and even engine damage if not addressed promptly.

OBDII Code P135D 2014 Chevrolet Silverado - Cooling Fan 2 Status Signals Message Counter Incorrect
P135D 2014 Chevrolet Silverado Code - Cooling Fan 2 Status Signals Message Counter Incorrect

Common Causes of P135D 2014 Chevrolet Silverado

  1. Faulty cooling fan motor
  2. Defective cooling fan relay
  3. Wiring or connection issues
  4. Faulty engine control module (ECM)
  5. Cooling fan sensor malfunction

Symptoms of P135D 2014 Chevrolet Silverado

  1. Engine overheating
  2. Loss of power or reduced engine performance
  3. Check Engine Light illuminated
  4. Unusual noise coming from the engine compartment
  5. High engine temperature gauge readings

How to Fix P135D 2014 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the issue using a scan tool to check for any fault codes and conducting a visual inspection of the cooling fan system.
  2. Test the cooling fan motor and relay to determine if they are functioning correctly. Replace any components that are faulty.
  3. Check the wiring and connections for any damage or corrosion, repairing or replacing them as needed.
  4. Test the ECM to ensure it is sending the correct signals to the cooling fan. Replace the ECM if necessary.
  5. Clear the fault codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P135D 2014 Chevrolet Silverado

The typical repair costs for addressing a P135D code in a 2014 Chevrolet Silverado can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

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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.

Frequently Asked Questions about P135D 2014 Chevrolet Silverado Code

1. What does the OBDII code P135D mean for a 2014 Chevrolet Silverado?

P135D indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect, often pointing to issues in the communication or operation of the secondary cooling fan.

2. What are the common symptoms of the P135D code?

Symptoms may include the cooling fan not functioning properly, overheating issues, reduced engine performance, or an illuminated Check Engine Light.

3. What causes the P135D code to appear?

Common causes include faulty cooling fan relays, a malfunctioning cooling fan motor, wiring issues, or problems with the Engine Control Module (ECM) communication.

4. Can the P135D code cause engine damage?

If left unaddressed, the code could lead to engine overheating, which may result in significant engine damage over time.

5. How do I diagnose the P135D code?

Start by inspecting the cooling fan relays, wiring, and connectors for damage or loose connections. Use a diagnostic scanner to check for related codes and test the cooling fan operation.

6. Can a faulty cooling fan motor trigger the P135D code?

Yes, a malfunctioning cooling fan motor can disrupt the operation of Cooling Fan 2 and trigger the P135D code.

7. How do I fix the P135D code?

Repairs may involve replacing a faulty cooling fan relay, repairing damaged wiring, replacing the cooling fan motor, or reprogramming the ECM if necessary.

8. How much does it cost to repair the P135D code?

Repair costs can vary, but replacing a cooling fan motor may cost between $300 and $600, while relay or wiring repairs are typically less expensive.

9. Can I drive my truck with the P135D code?

It’s not recommended to drive for extended periods with this code active, as cooling fan issues can lead to engine overheating and potential damage.

10. How can I prevent the P135D code from recurring?

Regularly inspect and maintain the cooling fan system, including relays, wiring, and the fan motor. Address any overheating issues promptly to avoid recurring problems.

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