P135D 2018 Chevrolet Silverado Code - Cooling Fan 2 Status Signals Message Counter Incorrect
Quick Answer
The P135D diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that there is an issue with the Cooling Fan 2 Status Signals Message Counter being incorrect. Common causes include Faulty cooling fan relay: A faulty relay can prevent the cooling fan from receiving the signal to turn on, Defective temperature sensor: A malfunctioning temperature sensor may provide incorrect readings to the ECM, leading to cooling fan issues, Wiring issues: Damaged or corroded wiring connections can disrupt the signals between the ECM and the cooling 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
- P135D 2018 Chevrolet Silverado indicates Cooling Fan 2 Status Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty cooling fan relay: A faulty relay can prevent the cooling fan from receiving the signal to turn on, Defective temperature sensor: A malfunctioning temperature sensor may provide incorrect readings to the ECM, leading to cooling fan issues, Wiring issues: Damaged or corroded wiring connections can disrupt the signals between the ECM and the cooling 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P135D 2018 Chevrolet Silverado Description
The P135D diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that there is an issue with the Cooling Fan 2 Status Signals Message Counter being incorrect. In modern vehicles, the cooling fan plays a crucial role in maintaining the engine's temperature within the optimal range. The cooling fan is controlled by the engine control module (ECM), which monitors various signals to determine when the fan should be activated to cool the engine down.
Common Causes of P135D 2018 Chevrolet Silverado
- Faulty cooling fan relay: A faulty relay can prevent the cooling fan from receiving the signal to turn on.
- Defective temperature sensor: A malfunctioning temperature sensor may provide incorrect readings to the ECM, leading to cooling fan issues.
- Wiring issues: Damaged or corroded wiring connections can disrupt the signals between the ECM and the cooling fan.
- ECM malfunction: A malfunctioning ECM can misinterpret signals related to the cooling fan operation, resulting in this code.
- Cooling fan motor failure: If the cooling fan motor fails, it will not be able to turn on and cool the engine as needed.
Symptoms of P135D 2018 Chevrolet Silverado
- Engine overheating: The most common symptom associated with this code is the engine overheating due to the cooling fan not operating correctly.
- Check engine light: The Check Engine light may illuminate on the dashboard to indicate a problem with the cooling fan system.
- Reduced engine performance: In some cases, the vehicle may experience reduced performance due to the engine operating at higher temperatures.
- Increased fuel consumption: A malfunctioning cooling fan can lead to increased fuel consumption as the engine works harder to maintain the correct temperature.
How to Fix P135D 2018 Chevrolet Silverado
- Diagnose the issue: Use a diagnostic scan tool to retrieve the DTC and perform further testing to identify the specific cause of the problem.
- Inspect cooling fan components: Check the cooling fan relay, temperature sensor, wiring connections, and cooling fan motor for any signs of damage or malfunction.
- Replace faulty components: Replace any faulty components identified during the inspection, such as the cooling fan relay, temperature sensor, or cooling fan motor.
- Clear the DTC: Once the repairs are completed, clear the DTC from the ECM's memory using a scan tool to reset the system.
- Test the cooling fan operation: After the repair, test the cooling fan operation to ensure that it activates correctly and cools the engine as needed.
Cost to Fix P135D 2018 Chevrolet Silverado
The typical repair costs for addressing a P135D code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue and the parts needed for the repair. In general, the cost of replacing components such as the cooling fan relay, temperature sensor, or cooling fan motor can range from $150 to $500, including parts and labor. Additional costs may apply if there are wiring issues that need to be repaired.
Need more information about the P135D 2018 Chevrolet Silverado code?
Need more information on how to fix the P135D 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P135D 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P135D 2018 Chevrolet Silverado Code
1. What does the OBDII code P135D mean on a 2018 Chevrolet Silverado?
P135D indicates an issue with the Cooling Fan 2 Status Signals Message Counter being incorrect, usually related to communication errors between the cooling fan module and the vehicle’s control modules.
2. What are the common symptoms of code P135D?
Common symptoms include the cooling fan running erratically, the engine overheating, a check engine light, and possible reduced engine performance.
3. What causes the P135D code to appear?
This code is typically caused by wiring issues, a faulty cooling fan module, a malfunctioning ECM (Engine Control Module), or software glitches affecting communication.
4. Can I drive my 2018 Chevrolet Silverado with the P135D code?
While the vehicle may still be drivable, ignoring this issue can lead to engine overheating and potential engine damage. It’s best to address the problem promptly.
5. How is the P135D code diagnosed?
A mechanic will typically use a scan tool to check for related codes, inspect the wiring and connectors for damage, and test the cooling fan module and ECM for proper operation.
6. How do you fix the P135D code?
Repairs may include replacing the cooling fan module, repairing or replacing damaged wiring, updating the ECM software, or clearing any communication errors.
7. Can a software update fix the P135D code?
Yes, in some cases, a software update for the ECM or cooling fan module can resolve communication issues causing the code.
8. What tools are needed to troubleshoot code P135D?
Troubleshooting typically requires an OBDII scanner, a multimeter for checking electrical connections, and possibly specialized diagnostic tools for reprogramming or testing the ECM.
9. What should I check first when troubleshooting P135D?
Start by inspecting the wiring and connectors for the cooling fan module, as physical damage or loose connections are common causes.
10. How much does it cost to repair the P135D code?
The repair cost can vary widely depending on the issue, ranging from $50 for simple wiring repairs to $500 or more for replacing the cooling fan module or reprogramming the ECM.
Discuss the causes and fixes for P135D 2018 Chevrolet Silverado OBDII Code
Code P135D 2018 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.