OBD Guide
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P135C

Cooling Fan 1 Status Signals Message Counter Incorrect

P135C is an OBD-II diagnostic trouble code meaning: Cooling Fan 1 Status Signals Message Counter Incorrect. Common causes: cooling fan malfunction, wiring harness damage. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Engine overheating
  • Unstable cooling fan operation
  • Check Engine Light Is On
  • Reduced cooling system efficiency
  • The fan does not turn on when operating temperature is reached

Causes

  • Cooling fan malfunction
  • Wiring harness damage
  • Fan relay problems
  • Control module malfunction
  • Contact corrosion

How to Fix

  1. Check the condition of the cooling fan
  2. Inspect the wiring harness for damage
  3. Check fan relay operation
  4. Test the control module
  5. Clean and check contacts

Related codes

P135BP135DP135E

FAQ

What does the P135C code mean?

P135C is an OBD-II diagnostic trouble code that indicates: Cooling Fan 1 Status Signals Message Counter Incorrect

What causes a P135C error code?

The most common causes of P135C include: Cooling fan malfunction; Wiring harness damage; Fan relay problems; Control module malfunction.

How do I fix a P135C diagnostic trouble code?

To fix P135C: Check the condition of the cooling fan. Inspect the wiring harness for damage. Check fan relay operation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P135C?

Limited driving only, diagnose soon

How much does it cost to fix P135C?

The estimated repair cost for P135C is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat