P135D 2015 GMC Sierra Code - Cooling Fan 2 Status Signals Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Cooling Fan 2, Cooling Fan 2 harness is open or shorted, Cooling Fan 2 circuit poor electrical connection. 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 2015 GMC Sierra indicates Cooling Fan 2 Status Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty Cooling Fan 2, Cooling Fan 2 harness is open or shorted, Cooling Fan 2 circuit poor electrical connection.
- 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.
Code P135D 2015 GMC Sierra Description
What are the Possible Causes of the DTC P135D 2015 GMC Sierra?
- Faulty Cooling Fan 2
- Cooling Fan 2 harness is open or shorted
- Cooling Fan 2 circuit poor electrical connection
How to Fix the DTC P135D 2015 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P135D 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P135D 2015 GMC Sierra Code
1. What does the OBDII code P135D mean on a 2015 GMC Sierra?
P135D indicates an issue with the Cooling Fan 2 Status Signals Message Counter, meaning there is a communication error or mismatch in the signal data sent between the cooling fan control module and the engine control module (ECM).
2. What are the common symptoms of the P135D code?
Symptoms may include the cooling fan running continuously, the fan not operating when needed, engine overheating, or an illuminated check engine light.
3. What causes the P135D code on a 2015 GMC Sierra?
Common causes include faulty cooling fan control module, wiring or connector issues related to the fan circuit, or a software communication error between the control modules.
4. Can a bad cooling fan relay cause the P135D code?
Yes, a faulty cooling fan relay can disrupt proper communication and contribute to the P135D code if it affects the operation of Cooling Fan 2.
5. How is the P135D code diagnosed?
A technician will typically scan the vehicle for codes, inspect the cooling fan wiring and connectors, test the cooling fan control module, and verify communication signals between modules using specialized diagnostic tools.
6. Is it safe to drive with the P135D code?
Driving with this code may be unsafe if the cooling fan is not functioning properly, as it can lead to engine overheating and potential damage.
7. Can a software update fix the P135D code?
In some cases, a software update for the ECM or cooling fan control module may resolve communication issues causing the P135D code.
8. How do I fix the P135D code on my 2015 GMC Sierra?
Repairs may include replacing the cooling fan control module, repairing damaged wiring or connectors, updating module software, or replacing a faulty fan relay.
9. How much does it cost to repair the P135D code?
Repair costs can vary but may range from $150 to $500 depending on whether parts like the cooling fan control module or wiring need replacement.
10. Can a weak battery cause the P135D code?
A weak or failing battery can sometimes contribute to communication errors between modules, potentially triggering the P135D code.
Discuss the causes and fixes for P135D 2015 GMC Sierra OBDII Code
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