P1591 is set when ECM is recognized as no DPF vehicle in spite of DPF or the opposite case.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring | 1. ECM component failure 2. DPF recognition circuit | ||
Enable Conditions |
•
IG key ON | |||
Threshold value |
•
Difference signal is low or autumatic recognition ground terminal is not good. | |||
Diagnosis Time |
•
1sec. | |||
Fail Safe | Fuel cut | NO |
•
- | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | OFF | |||
