Possible causes
– The EGR volume control valve circuit harness is open or shorted
– EGR volume control valve leaking or stuck open
– Faulty EGR temperature sensor
– EGR volume control valve leaking or stuck open
– Faulty EGR temperature sensor
Tech description
Start by cleaning the EGR valve, if the code persist it may be necessary to replaced the EGR Valve.
There is a factory service bulletin for the following Nissan Models:
2004-2005 Nissan Maxima
2004-2005 Nissan Quest
2005 Nissan Altima
Nissan Factory Service Bulletin OBDII Code P1402
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1402 NISSAN OBD Code Description