Possible causes
– EGR volume control valve stuck open
– Faulty EGR volume control valve
– EGR solenoid valve harness is open or shorted
– EGR solenoid valve circuit poor electrical connection
– Faulty EGR temperature sensor and circuit
– Faulty EGR volume control valve
– EGR solenoid valve harness is open or shorted
– EGR solenoid valve circuit poor electrical connection
– Faulty EGR temperature sensor and circuit
Tech description
There is a factory service bulletin for the following Lincoln models:
2001-2002 Lincoln Town Car
Lincoln Factory Service Bulletin OBDII Code P0402 Code
When is the obd code mean?
High Exhaust Gas Recirculation (EGR) flow control is detected
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Possible engine hesitation
– Possible engine hesitation
P0402 LINCOLN OBD Code Description
Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control