Engine-CodesChevrolet – P135F 2015 Chevrolet Silverado

P135F 2015 Chevrolet Silverado Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Quick Answer

The P135F diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates that the Cooling Fan 4 Status Signals Message Counter is incorrect. Common causes include Faulty cooling fan motor: The cooling fan motor may be malfunctioning, causing it to not send the correct signals to the control module, Damaged wiring harness: A damaged or corroded wiring harness can disrupt the communication between the cooling fan and the control module, leading to incorrect signals being received, Malfunctioning control module: The control module that regulates the cooling fan operation may be faulty, causing it to misinterpret signals from the fan. 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
P135F 2015 Chevrolet Silverado indicates Cooling Fan 4 Status Signals Message Counter Incorrect.
Common causes
Common causes include Faulty cooling fan motor: The cooling fan motor may be malfunctioning, causing it to not send the correct signals to the control module, Damaged wiring harness: A damaged or corroded wiring harness can disrupt the communication between the cooling fan and the control module, leading to incorrect signals being received, Malfunctioning control module: The control module that regulates the cooling fan operation may be faulty, causing it to misinterpret signals from the fan.
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 13, 2024
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Code P135F 2015 Chevrolet Silverado Description

The P135F diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates that the Cooling Fan 4 Status Signals Message Counter is incorrect. This code is typically associated with a malfunction in the cooling fan system, specifically related to the signals being sent and received by the control module. The cooling fan plays a crucial role in regulating the engine's temperature by dissipating heat generated during operation. When the cooling fan system is not functioning properly, it can lead to overheating, which can cause serious damage to the engine and other components.

OBDII Code P135F 2015 Chevrolet Silverado - Cooling Fan 4 Status Signals Message Counter Incorrect
P135F 2015 Chevrolet Silverado Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Common Causes of P135F 2015 Chevrolet Silverado

  1. Faulty cooling fan motor: The cooling fan motor may be malfunctioning, causing it to not send the correct signals to the control module.
  2. Damaged wiring harness: A damaged or corroded wiring harness can disrupt the communication between the cooling fan and the control module, leading to incorrect signals being received.
  3. Malfunctioning control module: The control module that regulates the cooling fan operation may be faulty, causing it to misinterpret signals from the fan.
  4. Poor connection: Loose or corroded electrical connections between the cooling fan, control module, and other components can lead to signal discrepancies and trigger this code.
  5. Software issues: In some cases, software glitches or programming errors within the vehicle's control module can cause incorrect message counters to be recorded.

Symptoms of P135F 2015 Chevrolet Silverado

  1. Engine overheating: One of the most common symptoms associated with this code is engine overheating. The cooling fan is responsible for regulating the engine's temperature, so a malfunction in this system can lead to overheating.
  2. Decreased fuel efficiency: A malfunctioning cooling fan can cause the engine to run hotter than normal, leading to decreased fuel efficiency as the engine works harder to maintain optimal operating temperature.
  3. Check Engine Light: The Check Engine Light may illuminate on the dashboard as a result of this code being triggered.
  4. Loud fan noise: A faulty cooling fan motor may produce loud or unusual noises when in operation, indicating a potential issue with the fan system.
  5. Inconsistent cooling fan operation: The cooling fan may not turn on or off at the appropriate times, leading to inconsistent cooling performance.

How to Fix P135F 2015 Chevrolet Silverado

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the specific DTC and perform a thorough inspection of the cooling fan system to identify the root cause of the problem.
  2. Test the cooling fan motor: Check the cooling fan motor for proper operation and replace it if necessary.
  3. Inspect the wiring harness: Examine the wiring harness for any damage or corrosion, and repair or replace any affected wires.
  4. Check the control module: Test the control module for functionality and replace it if it is determined to be faulty.
  5. Clear the code: After completing the repairs, clear the DTC from the vehicle's memory using a diagnostic scanner to reset the Check Engine Light and ensure that the issue has been resolved.

Cost to Fix P135F 2015 Chevrolet Silverado

The cost of repairing a P135F code on a 2015 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $100 to $500, with the cooling fan motor, wiring harness, and control module being potential components that may need to be replaced. Labor costs typically range from $150 to $300, with total repair costs averaging between $250 and $800. It's important to note that these estimates are rough averages and actual costs may vary based on factors such as location, labor rates, and the specific parts required for the repair. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's specific needs.

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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 P135F 2015 Chevrolet Silverado Code

1. What does the OBDII code P135F mean on a 2015 Chevrolet Silverado?

Code P135F indicates an issue with the cooling fan 4 status signals, specifically that the message counter is incorrect, potentially causing improper fan operation.

2. What are common symptoms of the P135F code in a 2015 Chevrolet Silverado?

The most common symptoms include an illuminated check engine light, overheating engine, or the cooling fan not operating as expected.

3. What causes the P135F code to appear on a 2015 Chevrolet Silverado?

Common causes include a faulty cooling fan module, damaged wiring or connectors, or a malfunction in the Engine Control Module (ECM) communication with the fan.

4. Can a P135F code lead to engine damage if ignored?

Yes, if the cooling fan is not functioning properly, it can cause the engine to overheat, leading to potential engine damage.

5. How is the P135F code diagnosed in a 2015 Chevrolet Silverado?

A technician will use a scan tool to confirm the code, inspect the cooling fan circuit for wiring issues, and test the cooling fan module and ECM communication.

6. How do you fix the P135F code on a 2015 Chevrolet Silverado?

Repairs may include replacing the cooling fan module, repairing damaged wiring, or reprogramming or replacing the ECM if necessary.

7. Is the cooling fan module a common part to fail on a 2015 Chevrolet Silverado with a P135F code?

Yes, the cooling fan module is a common culprit for this code, but a thorough diagnosis should be performed to rule out other issues.

8. Can a loose or corroded connector cause the P135F code?

Yes, a loose, corroded, or damaged connector in the cooling fan circuit can disrupt communication and trigger the code.

9. How much does it cost to repair a P135F code on a 2015 Chevrolet Silverado?

Repair costs can vary, but replacing the cooling fan module typically ranges from $200 to $400, excluding labor, while wiring repairs may cost less.

10. Can a DIYer fix the P135F code on a 2015 Chevrolet Silverado?

A skilled DIYer with proper tools might be able to repair wiring or replace the fan module, but reprogramming the ECM often requires professional equipment.

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