DTC P0684 is set when feedback signal is not normal for 1 sec.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Voltage monitoring | 1. Glow plug / control unit circuit error 2. Faulty GCU | ||
Enable Conditions |
•
IG key ON | |||
Threshold value |
•
Feedback signal is not normal | |||
Diagnosis Time |
•
1 sec. | |||
Fail Safe | Fuel cut | NO |
•
- | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | OFF | |||
