Difference between revisions of "02251"
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* When found in Aux Heater module of VW Touran (1T, and similar models), unlock heater module by saving a 1 in Adaptation Channel 042, then clear fault codes. | * When found in Aux Heater module of VW Touran (1T, and similar models), unlock heater module by saving a 1 in Adaptation Channel 042, then clear fault codes. | ||
* When found in Aux Heater module of VW Transporter (7H), unlock heater module by saving a 1 in Adaptation Channel 003, then clear fault codes. | * When found in Aux Heater module of VW Transporter (7H), unlock heater module by saving a 1 in Adaptation Channel 003, then clear fault codes. | ||
| − | * When found in Aux Heater module of Audi A8 (4E), unlock heater module by saving a 1 in Adaptation Channel 007, then clear fault codes. | + | * When found in Aux Heater module of Audi A8 (4E) and Audi Q7 (4L), unlock heater module by saving a 1 in Adaptation Channel 007, then clear fault codes. |
| − | * When found in Aux Heater module of Audi A4 (8K), Audi A5 (8T), Audi Q5 (8R), Audi A6 (4G), Audi A7 (4G) or Audi A8 (4H), unlock heater module by saving a 1 in Adaptation Channel 042, then clear fault codes. | + | * When found in Aux Heater module of Audi A4 (8K), Audi A5 (8T), Audi Q5 (8R), Audi A6 (4F), Audi A6 (4G), Audi A7 (4G) or Audi A8 (4H), unlock heater module by saving a 1 in Adaptation Channel 042, then clear fault codes. |
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| + | === Special Notes === | ||
| + | * When Address 18-Aux. Heat has additional system specific DTCs in conjunction with Heater Unit Locked the cause needs to be diagnosed and repaired. After system specific DTCs are set, the heater unit will lock. For example, TPI 2016660 specifies 3 occurrences of [[01412]] - Glow-Plug with Flame Monitoring (Q8) will result in [[02251]] - Heater Unit Locked. | ||
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[[Category:Fault Codes]] | [[Category:Fault Codes]] | ||
Latest revision as of 09:35, 16 November 2017
02251 - Heater Unit Locked
02251 - Heater Unit Locked
Possible Symptoms
- Heater not working
- Heater Module refuses to clear Fault Codes
Possible Causes
- Fuel Level low
Possible Solutions
- When found in Aux Heater module of VW Touareg (7L), unlock heater module by saving a 1 in Adaptation Channel 003, then clear fault codes.
- When found in Aux Heater module of VW Touran (1T, and similar models), unlock heater module by saving a 1 in Adaptation Channel 042, then clear fault codes.
- When found in Aux Heater module of VW Transporter (7H), unlock heater module by saving a 1 in Adaptation Channel 003, then clear fault codes.
- When found in Aux Heater module of Audi A8 (4E) and Audi Q7 (4L), unlock heater module by saving a 1 in Adaptation Channel 007, then clear fault codes.
- When found in Aux Heater module of Audi A4 (8K), Audi A5 (8T), Audi Q5 (8R), Audi A6 (4F), Audi A6 (4G), Audi A7 (4G) or Audi A8 (4H), unlock heater module by saving a 1 in Adaptation Channel 042, then clear fault codes.
Special Notes
- When Address 18-Aux. Heat has additional system specific DTCs in conjunction with Heater Unit Locked the cause needs to be diagnosed and repaired. After system specific DTCs are set, the heater unit will lock. For example, TPI 2016660 specifies 3 occurrences of 01412 - Glow-Plug with Flame Monitoring (Q8) will result in 02251 - Heater Unit Locked.