P1406
Exhaust Gas Recirculation Position Sensor Performance
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Unstable engine idling
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Illuminates
- Dips during acceleration
Causes
- EGR position sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Mechanical problems of the EGR valve
- Sensor contamination with carbon deposits
How to Fix
- Check the continuity of the EGR position sensor circuit
- Clean sensor connector contacts
- Check the mechanical operation of the EGR valve
- Replace EGR position sensor if necessary
- Test the system after repair