If exhaust gas flow rate is normal but pressure difference calculated by DPS is below set-point(No pressure difference between front and rear CPF), ECM sets DTC P20020000.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal monitoring | 1. Poor connector connection 2. Faulty signal circuit of DPS 3. Defected DPS 4. Defected DPF 5. Leakage on exhaust system | |
Enable Condition |
•
Engine running | ||
Threshold Valu | Case 1 |
•
If exhaust gas flow rate is increase or decrease and pressure difference from DPS is below or above set-point | |
Case 2 |
•
DPS signal is at maximum set-point | ||
Detecting Time |
•
- | ||
Fail Safe | Engine OFF |
•
No | |
EGR OFF |
•
No | ||
Torque Limit |
•
No | ||
MIL |
•
Blink | ||
