Audi DTC P1404 – EGR Flow Basic Setting not carried out
DTC P1404 meaning on Audi
DTC P1404 on an Audi indicates that the Engine Control Module (ECM) has detected a fault related to the Exhaust Gas Recirculation (EGR) system. Specifically, it signifies that the basic setting for EGR flow has not been carried out as expected.
Audi DTC P1404 symptoms
Symptoms of DTC P1404 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 P1404 causes
The common causes of DTC P1404 on an Audi can include a faulty EGR valve, clogged EGR passages, a malfunctioning EGR temperature sensor, or issues with the EGR solenoid.
Audi DTC P1404 seriousness
While DTC P1404 may not always lead to immediate drivability issues, it is important to address this fault promptly to prevent potential long-term damage to the engine and emissions system.
How to diagnose DTC P1404 on Audi
To diagnose DTC P1404 on an Audi, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the EGR system components. Testing the EGR valve, sensor, and solenoid for proper operation would be crucial in pinpointing the exact cause of the fault.
How to fix DTC P1404 on Audi
Fixing DTC P1404 on an Audi may involve cleaning or replacing the EGR valve, clearing any obstructions in the EGR passages, testing and potentially replacing the EGR temperature sensor, or addressing any issues with the EGR solenoid. It is recommended to follow the manufacturer’s diagnostic and repair procedures for a comprehensive fix.
How to erase DTC P1404 on Audi
Once the underlying issue causing DTC P1404 on an Audi has been resolved, the fault code can be cleared using a diagnostic scanner. By erasing the code, the Check Engine Light should turn off, indicating that the fault has been addressed successfully.
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