P1815 is set when the signal from 'ESP auto recognition' terminal changes during engine running. This code is due to open in terminal for ESP option, grounded condition for Non ESP option. This code is normally arises from ESP option vehicle. Check the grounding condition of 'ESP auto recognition' terminal.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring | 1. ESP auto recognition circuit 2. ECM component failure | ||
Enable Conditions |
•
Engine running | |||
Threshold value |
•
ESP auto recognition signal changes at engine ON. | |||
Diagnosis Time |
•
0.6 sec. | |||
Fail Safe | Fuel cut | NO |
•
- | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | OFF | |||
