Infiniti DTC P1401 – EGR Temperature Sensor
DTC P1401 meaning on Infiniti
DTC P1401 on an Infiniti refers to a fault with the Exhaust Gas Recirculation (EGR) Temperature Sensor circuit. This diagnostic trouble code indicates that the EGR temperature sensor is sending a signal that is outside the expected range.
Infiniti DTC P1401 symptoms
Symptoms of DTC P1401 on an Infiniti may include:
- Check Engine Light illuminated
- Decreased fuel efficiency
- Engine performance issues
- Increased emissions
Infiniti DTC P1401 causes
Common causes of DTC P1401 on an Infiniti include:
- Failed EGR temperature sensor
- Wiring or connector issues in the EGR temperature sensor circuit
- Carbon buildup in the EGR system
Infiniti DTC P1401 seriousness
While DTC P1401 is not typically a critical issue that will leave you stranded, it can lead to decreased fuel efficiency and increased emissions if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P1401 on Infiniti
To diagnose DTC P1401 on an Infiniti, you can:
- Use a scan tool to retrieve the trouble codes and freeze frame data
- Inspect the EGR temperature sensor and its wiring for any visible damage
- Test the EGR temperature sensor using a multimeter to check for proper resistance values
- Check for carbon buildup in the EGR system
How to fix DTC P1401 on Infiniti
To fix DTC P1401 on an Infiniti, you may need to:
- Replace the EGR temperature sensor if it is faulty
- Repair any damaged wiring or connectors in the EGR temperature sensor circuit
- Clean out any carbon buildup in the EGR system
How to erase DTC P1401 on Infiniti
To erase DTC P1401 on an Infiniti, you can:
- Use a scan tool to clear the trouble codes
- After making any necessary repairs, clear the codes again to ensure they do not return