- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
P0406 FORD - Exhaust Gas Recirculation Sensor 'A' Circuit High
Possible causes- EGR volume control solenoid valve harness is open or shorted - EGR volume control solenoid valve circuit poor electrical connection - EGR volume control solenoid valve - EGR temperature sensor and circuit
exhaust gas recirculation sensor A circuit high. you can find out about this at autozone.com. they have assistance in troubleshooting, and locations of parts.
both codes po406 and po404 refer to a fault in the EGR system
Po404 > Exhaust Gas Recirculation Circuit Range/Performance not within proper range.
Po406> Exhaust Gas Recirculation Sensor A Circuit High (meaning the circuit is open or disconnected)
Without actualy checking the voltages (wiring)
Replace the EGR valve
clear codes
test drive
×