OBD Guide

P2C42

Fan 4 Performance/Stuck Off

P2C42 is an OBD-II diagnostic trouble code meaning: Fan 4 Performance/Stuck Off. Common causes: fan motor malfunction, problems with wiring or connectors. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Engine overheating
  • Increased coolant temperature
  • Check Engine Light Is On
  • Reduced engine performance
  • Fan noise or lack of operation

Causes

  • Fan motor malfunction
  • Problems with wiring or connectors
  • Fan relay failure
  • Engine control unit (ECU) malfunction
  • Mechanical fan lock

How to Fix

  1. Check the fan motor for operation
  2. Inspect wiring and connectors for damage
  3. Check fan relay
  4. Diagnose the engine control unit (ECU)
  5. Remove mechanical obstacles to the fan

Related codes

Error P2C42 by Vehicle Brand

FAQ

What does the P2C42 code mean?

P2C42 is an OBD-II diagnostic trouble code that indicates: Fan 4 Performance/Stuck Off

What causes a P2C42 error code?

The most common causes of P2C42 include: Fan motor malfunction; Problems with wiring or connectors; Fan relay failure; Engine control unit (ECU) malfunction.

How do I fix a P2C42 diagnostic trouble code?

To fix P2C42: Check the fan motor for operation. Inspect wiring and connectors for damage. Check fan relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2C42?

Limited driving only, diagnose soon

How much does it cost to fix P2C42?

The estimated repair cost for P2C42 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat