OBD Guide
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P135D

Cooling Fan 2 Status Signals Message Counter Incorrect

P135D is an OBD-II diagnostic trouble code meaning: Cooling Fan 2 Status Signals Message Counter Incorrect. Common causes: open or short circuit in the fan circuit, faulty fan relay. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Engine overheating
  • Cooling fan does not turn on
  • The fan runs constantly
  • Unstable fan operation

Causes

  • Open or short circuit in the fan circuit
  • Faulty fan relay
  • Damaged wiring harness
  • Problems with the engine control unit
  • Poor contact in connectors

How to Fix

  1. Check fuses and fan relays
  2. Inspect the wiring harness for damage
  3. Check connectors and contacts
  4. Test the fan operation
  5. Read additional error codes for accurate diagnosis

Related codes

P135CP135EP0480

FAQ

What does the P135D code mean?

P135D is an OBD-II diagnostic trouble code that indicates: Cooling Fan 2 Status Signals Message Counter Incorrect

What causes a P135D error code?

The most common causes of P135D include: Open or short circuit in the fan circuit; Faulty fan relay; Damaged wiring harness; Problems with the engine control unit.

How do I fix a P135D diagnostic trouble code?

To fix P135D: Check fuses and fan relays. Inspect the wiring harness for damage. Check connectors and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P135D?

Limited driving only, diagnose soon

How much does it cost to fix P135D?

The estimated repair cost for P135D is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat