P135C 2017 Chevrolet Silverado Code - Cooling Fan 1 Status Signals Message Counter Incorrect
Quick Answer
The P135C diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates that the Cooling Fan 1 Status Signals Message Counter is incorrect. Common causes include Faulty cooling fan motor: The cooling fan motor may be malfunctioning, preventing the fan from operating properly, Defective cooling fan relay: A faulty relay can disrupt the signal between the ECM and the cooling fan, leading to incorrect message counters, Wiring issues: Damaged or corroded wiring connections between the cooling fan, relay, and ECM can cause communication errors. 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
- P135C 2017 Chevrolet Silverado indicates Cooling Fan 1 Status Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty cooling fan motor: The cooling fan motor may be malfunctioning, preventing the fan from operating properly, Defective cooling fan relay: A faulty relay can disrupt the signal between the ECM and the cooling fan, leading to incorrect message counters, Wiring issues: Damaged or corroded wiring connections between the cooling fan, relay, and ECM can cause communication errors.
- 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.
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Code P135C 2017 Chevrolet Silverado Description
The P135C diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates that the Cooling Fan 1 Status Signals Message Counter is incorrect. This code is specifically related to the cooling fan system in the vehicle. The cooling fan plays a crucial role in maintaining the engine's optimal operating temperature by dissipating heat generated during combustion. When the cooling fan 1 status signals message counter is incorrect, it means that the signals being sent to the engine control module (ECM) regarding the cooling fan's operation are not matching the expected values. This discrepancy can lead to various issues with the vehicle's cooling system, potentially causing overheating and engine damage if left unresolved.
Common Causes of P135C 2017 Chevrolet Silverado
- Faulty cooling fan motor: The cooling fan motor may be malfunctioning, preventing the fan from operating properly.
- Defective cooling fan relay: A faulty relay can disrupt the signal between the ECM and the cooling fan, leading to incorrect message counters.
- Wiring issues: Damaged or corroded wiring connections between the cooling fan, relay, and ECM can cause communication errors.
- ECM malfunction: A problem with the engine control module itself can also result in incorrect message counters being sent to the cooling fan system.
Symptoms of P135C 2017 Chevrolet Silverado
- Engine overheating: One of the most common symptoms associated with this code is engine overheating, as the cooling fan may not be operating correctly to regulate the engine temperature.
- High engine temperature warning light: The vehicle's dashboard may display a warning light indicating high engine temperature due to inadequate cooling.
- Reduced air conditioning performance: The cooling fan also helps cool the air conditioning condenser, so a malfunctioning fan may lead to reduced air conditioning performance.
- Increased fuel consumption: If the engine is running hotter than normal due to cooling fan issues, it may consume more fuel to maintain performance.
How to Fix P135C 2017 Chevrolet Silverado
- Diagnose the issue: Use a diagnostic scanner to retrieve the specific error codes and pinpoint the exact cause of the problem.
- Inspect the cooling fan: Check the cooling fan motor for proper operation and replace it if necessary.
- Test the cooling fan relay: Verify that the relay is functioning correctly and replace it if it is defective.
- Check wiring connections: Inspect the wiring harness for any damage or corrosion, and repair or replace as needed.
- Reset the ECM: Clear the error codes and reset the ECM to ensure proper communication with the cooling fan system.
Cost to Fix P135C 2017 Chevrolet Silverado
The cost of repairing a P135C code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing a cooling fan motor can cost between $200 and $500, while a cooling fan relay typically ranges from $50 to $150. Labor costs at an auto repair shop can add an additional $100 to $200 per hour, with the total repair bill likely falling between $300 and $800. It's important to note that these estimates are rough averages, and actual costs may vary based on the location, labor rates, and any additional parts or services required. It's recommended to consult with a qualified mechanic or dealership for a more accurate cost estimate tailored to your vehicle's specific needs.
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Frequently Asked Questions about P135C 2017 Chevrolet Silverado Code
1. What does the OBDII code P135C mean on a 2017 Chevrolet Silverado?
P135C indicates an issue with the Cooling Fan 1 Status Signals Message Counter being incorrect, suggesting a communication error between the Engine Control Module (ECM) and the cooling fan module.
2. What are the common symptoms of code P135C in a 2017 Chevrolet Silverado?
Symptoms may include the cooling fan running at incorrect speeds, the fan not turning on, potential engine overheating, or an illuminated Check Engine Light.
3. What causes the P135C code to appear on a 2017 Chevrolet Silverado?
Possible causes include a faulty cooling fan module, damaged wiring or connectors, a software issue in the ECM, or poor communication between the ECM and cooling fan module.
4. Can a P135C code cause engine overheating?
Yes, if the cooling fan is not functioning properly due to this issue, it can lead to inadequate engine cooling and potential overheating.
5. How do you diagnose code P135C on a 2017 Chevrolet Silverado?
Diagnosis involves scanning for codes, inspecting the cooling fan module and related wiring for damage, checking communication signals between the ECM and fan module, and testing the fan operation.
6. Is the cooling fan module usually the main issue for a P135C code?
While the cooling fan module can be the culprit, the issue could also stem from wiring problems or a fault in the ECM. Proper diagnosis is essential.
7. Can a software update resolve the P135C code on a 2017 Chevrolet Silverado?
In some cases, a software update for the ECM may resolve communication issues causing the P135C code, but this depends on the specific circumstances.
8. How much does it cost to repair a P135C code on a 2017 Chevrolet Silverado?
Repair costs can vary, ranging from $50 to $150 for wiring repairs, $300 to $600 for a new cooling fan module, or more if ECM reprogramming is required.
9. Can I drive my 2017 Chevrolet Silverado with a P135C code?
Driving with this code is not recommended, as improper cooling fan operation can lead to engine overheating and potential long-term damage.
10. What tools are needed to fix a P135C code on a 2017 Chevrolet Silverado?
Common tools include an OBDII scanner, a multimeter for electrical testing, and potentially specialized diagnostic tools for ECM communication testing.
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