Audi DTC P1403 – EGR Flow Deviation
DTC P1403 meaning on Audi
DTC P1403 on an Audi indicates an EGR (Exhaust Gas Recirculation) flow deviation. This means that the actual flow of exhaust gas through the EGR system is not within the expected parameters set by the vehicle’s engine control module.
Audi DTC P1403 symptoms
Symptoms of DTC P1403 on an Audi may include rough idling, engine hesitation, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
Audi DTC P1403 causes
The common causes of DTC P1403 on an Audi include a faulty EGR valve, clogged EGR passages, a malfunctioning EGR temperature sensor, or issues with the EGR vacuum control solenoid.
Audi DTC P1403 seriousness
While DTC P1403 may not cause immediate harm to the vehicle, it can lead to decreased engine performance and increased emissions. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P1403 on Audi
To diagnose DTC P1403 on an Audi, a mechanic would typically use a diagnostic scanner to retrieve the trouble codes stored in the vehicle’s engine control module. They would then perform a visual inspection of the EGR system components, test the EGR valve functionality, check for vacuum leaks, and verify the operation of related sensors.
How to fix DTC P1403 on Audi
Fixing DTC P1403 on an Audi may involve cleaning or replacing the EGR valve, clearing any obstructions in the EGR passages, replacing the EGR temperature sensor if faulty, or addressing issues with the EGR vacuum control solenoid. It is important to follow the manufacturer’s recommended procedures for proper repair.
How to erase DTC P1403 on Audi
Once the underlying issue causing DTC P1403 on an Audi has been resolved, the trouble codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and allow the vehicle’s engine control module to monitor the system for any new faults.
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