EGR Function Open
Table of contents
P1402 NISSAN Possible Causes
- Faulty EGR temperature sensor
- 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
How do I fix code P1402 NISSAN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- Start by cleaning the EGR valve, if the code persists it may be necessary to replace 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
Cost of diagnosing the P1402 NISSAN code
The cost of diagnosing the P1402 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1402 NISSAN Description
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