Infiniti DTC P1402 – EGR Function (Open)
DTC P1402 meaning on Infiniti
DTC P1402 on an Infiniti indicates an issue with the Exhaust Gas Recirculation (EGR) valve function. This code specifically points to an open circuit in the EGR valve position sensor.
Infiniti DTC P1402 symptoms
- Check Engine Light (CEL) illuminated on the dashboard
- Decreased engine performance
- Increased fuel consumption
- Possible rough idling or stalling
Infiniti DTC P1402 causes
- Malfunctioning EGR valve position sensor
- Wiring or connector issues in the EGR valve circuit
- Carbon buildup in the EGR system
Infiniti DTC P1402 seriousness
The seriousness of DTC P1402 on an Infiniti lies in its potential to affect engine performance and emissions. Ignoring this issue can lead to decreased fuel efficiency and potential damage to other engine components over time.
How to diagnose DTC P1402 on Infiniti
- Use an OBD-II scanner to retrieve the specific trouble code
- Inspect the EGR valve and its wiring for any visible damage or corrosion
- Test the EGR valve position sensor for proper functionality
- Check for any carbon buildup in the EGR system
How to fix DTC P1402 on Infiniti
- Replace the EGR valve position sensor if faulty
- Repair or replace any damaged wiring or connectors in the EGR circuit
- Clean out any carbon deposits in the EGR system
- Clear the trouble code and test drive the vehicle to ensure the issue is resolved
How to erase DTC P1402 on Infiniti
- Use an OBD-II scanner to clear the trouble code
- If the underlying issue has been fixed, the Check Engine Light should turn off
- Ensure the vehicle operates normally after code erasure
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