P2002 is set when 1) Differncial pressure below lower limit value at exhaust flow above specified value(Case 1) or 2) Differential pressure above maximum acceptable value(Case 2) or 3) too slight change of differential pressure compared to exhaust flow(Case 3) is detected.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Voltage Monitoring | 1. Differncial pressure sensor wiring 2. Differncial pressure sensor component 3. Differncial pressure sensor hose line Misinstallation/Clogging/Freezing/Crack 4. Failed CPF 5. Too much soot loading inside CPF | ||
Enable Conditions |
•
IG KEY "ON" | |||
Threshold value |
•
Refer to DTC description | |||
Diagnosis Time |
•
(Case 1) - 15 sec.
•
(Case 2) - 25 sec.
•
(Case 3) - 2 sec. | |||
Fail Safe | Fuel cut | NO | Case 1,3
•
Soot simulation ON mode activated
•
Reduced regeneration mileage Case 2
•
Torque reduction | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | BLINK | |||
