P1402 NISSAN - EGR Function Open
- EGR volume control valve harness is open or shorted
- EGR volume control valve circuit poor electrical connection
- EGR volume control valve leaking or stuck open
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
This system controls flow rate of Exhaust Gas Recirculation (EGR) led from exhaust manifold to intake manifold. The opening of the EGR by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor moves the valve in steps corresponding to the Engine Control Module (ECM) output pulses. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. The EGR volume control valve remains closed under the following conditions.
- Engine stopped
- Engine starting
- Engine idling
- Low engine coolant temperature
- Excessively high engine coolant temperature
- High engine speed
- Wide open throttle
- Low battery voltage
P1402 2006 NISSAN ALTIMA SEDAN
P1402 2004 NISSAN MAXIMA
P1402 2005 NISSAN MAXIMA
P1402 2006 NISSAN MAXIMA
P1402 2002 NISSAN SENTRA
P1402 2003 NISSAN SENTRA
P1402 2004 NISSAN SENTRA
P1402 2005 NISSAN SENTRA
P1402 2006 NISSAN SENTRA
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