P1401
DPFE Circuit High Input
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Check Engine Light Is On
- Unstable engine idling
- Reduced engine power
- Increased fuel consumption
- Dips during acceleration
Causes
- DPFE sensor malfunction
- Open or short circuit in the sensor circuit
- Problems with the sensor wiring harness
- Dirty or clogged EGR pipes
- EGR valve malfunction
How to Fix
- Check DPFE sensor circuit continuity
- Test the DPFE sensor
- Clean or replace EGR pipes
- Check the operation of the EGR valve
- Replace DPFE sensor if necessary