Audi P1421: Secondary Air Injector Valve Circuit Short to Ground
Is your scanner showing Audi P1421?
No worries. We'll show you what it means and how to deal with it.
Audi P1421: Secondary Air Injector Valve Circuit Short to Ground
OVERVIEWWhat Does The Audi P1421 Code Mean?
This code indicates that the Engine Control Module detects a short circuit to ground when activating the secondary air injection solenoid valve.
Note: Solenoid valve is closed when no voltage is present.
What Are The Potential Causes Of The Audi P1421 Code?
Below are some potential causes of this DTC:
- Connector to the secondary air injection valve is loose or disconnected
- Secondary air injector valve circuit short
- Secondary air injector valve circuit is open
- Faulty secondary air injector valve
- 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:
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Secondary Air Injection Pump Check Valve Audi
>>> Audi Engine Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
