P135D Chevrolet 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 Chevrolet 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 Chevrolet Description
What are the Possible Causes of the DTC P135D Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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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Information for Specific Chevrolet Models
- P135D 2014 Chevrolet Silverado — Cooling Fan 2 Status Signals Message Counter Incorrect
- P135D 2015 Chevrolet Silverado — Cooling Fan 2 Status Signals Message Counter Incorrect
- P135D 2016 Chevrolet Silverado — Cooling Fan 2 Status Signals Message Counter Incorrect
- P135D 2017 Chevrolet Silverado — Cooling Fan 2 Status Signals Message Counter Incorrect
- P135D 2018 Chevrolet Silverado — Cooling Fan 2 Status Signals Message Counter Incorrect
Frequently Asked Questions about P135D Chevrolet Code
1. What does the OBDII code P135D indicate on a Chevrolet?
The P135D code on a Chevrolet signifies an issue with the "Cooling Fan 2 Status Signals Message Counter Incorrect." This means there is a discrepancy or fault in the communication regarding the status of the second cooling fan.
2. What symptoms might I notice if my Chevrolet has the P135D code?
Symptoms can include the engine overheating, the second cooling fan not operating properly, or possibly no noticeable symptoms at all apart from the check engine light being illuminated.
3. What are common causes of the P135D code in Chevrolets?
Common causes include faulty cooling fan relay, issues with the cooling fan motor, wiring problems affecting the fan circuit, or a malfunctioning engine control module (ECM).
4. How can I fix the P135D code on my Chevrolet?
To fix the P135D code, you should start by checking the cooling fan circuit for any damaged wires or poor connections. Replace the cooling fan relay or fan motor if they are defective. If the problem persists, it may be necessary to consult a professional to assess the ECM.
5. Is it safe to drive my Chevrolet with the P135D code active?
Driving with the P135D code can be risky if the cooling fan is malfunctioning, as it may lead to the engine overheating. It is advisable to address the issue promptly to avoid potential engine damage.
6. How can I diagnose the P135D code in my Chevrolet?
Diagnosing the P135D code involves using a scan tool to verify the code and observing the behavior of the cooling fan. Checking the electrical connections, wiring, and continuity in the fan circuit is crucial. Additionally, testing the fan motor and relay can help pinpoint the issue.
7. What tools are needed to diagnose and repair the P135D code?
You will need a digital multimeter for electrical testing, a scan tool to read and clear the code, and basic hand tools to access and replace components like the cooling fan relay or motor.
8. Could the P135D code indicate a problem elsewhere in the cooling system?
While P135D specifically relates to the fan’s status signal, underlying issues could be affecting the cooling system. It’s important to check the entire system, including the coolant levels, thermostat, and radiator, to ensure there are no additional problems causing the fan malfunction.
9. What preventive measures can be taken to avoid the P135D code on a Chevrolet?
Regular maintenance of the cooling system, including checking coolant levels, ensuring good electrical connections, and periodically testing the operation of the cooling fans, can help prevent issues related to code P135D.
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