P0400 CHRYSLER Exhaust Gas Recirculation System Performance

Possible causes
– Exhaust Gas Recirculation (EGR) volume control valve stuck closed
– Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve
– Faulty EGR Valve
– Faulty EGR temperature sensor and circuit
– Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted
– Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection
– Dead (Weak) battery
Tech notes
EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. Before replacing any parts try cleaning the EGR valve, tube and passages.
When is the code detected?
EGR flow control is not responding
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Possible engine hesitation
P0400 CHRYSLER Description
Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control