B2343 is outputted when both "AMBIENT TEMPERATURE SENSOR" and AHS CM internal temperature sensor have any fault.
"AMBIENT TEMPERATURE SENSOR" fail is detected and then the internal temperature sensor fail keeps more than 5 minutes.
If this code is outputted, AHS CM controls the system by 20℃.
Item | Conditions for setting DTC | Possible Cause | |
DTC Strategy |
•
Check CAN communication and voltage monitoring | 1. Ambient sensor CAN signal error(invalid) 2. Ambient sensor CAN signal error timeout (500㎳) 3. Internal sensor short 4. Internal sensor open | |
Enable Conditions |
•
IG key "ON" | ||
Threshold Value |
•
"AMBIENT TEMPERATURE SENSOR" fail continuous & maintains, internal temperature sensor fail 5min continuous & maintains
•
If fail is corrected during the counter, the counter is reset. | ||
Diagnostic Time |
•
"AMBIENT TEMPERATURE SENSOR" fail : 20㎳
•
Internal temperature sensor fail : 100㎳ | ||
Fail-safe |
•
AHS operates by 20℃(Default mode) | ||
Cancellation | Active DTC |
•
No problem after IG key "ON" again
•
Can be erased by GDS | |
History DTC |
•
Can be erased by GDS | ||
