Manufacturer-specific code

This code means different things on different makes. Find yours below.

• Ford

  Cylinder head overtemperature protection active

  The engine computer has gone into fail-safe mode because the cylinder head was too hot. It may cut fuel to some cylinders to cool the engine.

  Likely causes, most likely first

  1. 01Low coolant from a leak
  2. 02Thermostat stuck closed
  3. 03Cooling fan not running
  4. 04Failing water pump
  5. 05Head gasket failure

  Severity: Stop driving · Workshop job