P1404 – Infiniti DTC

Infiniti DTC P1404 – EGR Valve Stuck Closed

DTC P1404 meaning on Infiniti

1. DTC P1404 indicates that the Engine Control Module (ECM) has detected that the Exhaust Gas Recirculation (EGR) valve is stuck closed.

Infiniti DTC P1404 symptoms

• Check Engine Light (CEL) illuminated on the dashboard.
• Reduced engine performance.
• Potential rough idling or stalling.

Infiniti DTC P1404 causes

• Carbon buildup in the EGR valve causing it to stick closed.
• Faulty EGR valve position sensor.
• Wiring issues or electrical faults in the EGR system.

Infiniti DTC P1404 seriousness

1. If left unresolved, DTC P1404 can lead to increased emissions, reduced fuel efficiency, and potential engine damage over time.

How to diagnose DTC P1404 on Infiniti

1. Use a scan tool to retrieve the trouble codes and confirm DTC P1404.
2. Inspect the EGR valve and associated components for any signs of damage or carbon buildup.
3. Check the wiring and connectors in the EGR system for any faults.

How to fix DTC P1404 on Infiniti

1. Clean or replace the EGR valve to address any carbon buildup issues.
2. Test and, if necessary, replace the EGR valve position sensor.
3. Repair any wiring or electrical faults in the EGR system.

How to erase DTC P1404 on Infiniti

1. After fixing the underlying issue causing DTC P1404, use a scan tool to clear the trouble codes from the ECM memory.
2. Ensure that the repair has resolved the problem before clearing the code.