Audi P1477: EVAP Emission Control LDP Circuit Malfunction
Is your scanner showing Audi P1477?
No worries. We'll show you what it means and how to deal with it.
Audi P1477: EVAP Emission Control LDP Circuit Malfunction
OVERVIEWWhat Does The Audi P1477 Code Mean?
Key on, KOEO Self-Test enabled, and the ECM detected an unexpected voltage condition on the EVAP emission control leak detection pump circuit.
What Are The Potential Causes Of The Audi P1477 Code?
- Leak Detection Pump has failed
- EVAP canister system has an improper or broken seal
- Evaporative Emission (EVAP) canister purge regulator valve 1 is faulty
- Hoses between the fuel pump and the EVAP canister are faulty
- Fuel filler cap is loose
- Fuel pump seal is defective, faulty or otherwise leaking
- Hoses between the EVAP canister and the fuel flap unit are faulty
- Hoses between the EVAP canister and the evaporative emission canister purge regulator valve are faulty
- ECM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
