02251
From Ross-Tech Wiki
02251 - Heater Unit Locked
02251 - Heater Unit Locked
Possible Symptoms
- Heater not working.
- Heater module refuses to clear fault codes.
Possible Causes
- Unknown.
Possible Solutions
- When found in Aux Heater module of VW Touran (and possibly similar models), unlock heater module by saving a 1 in Adaptation Channel 42, then clear fault codes.