BMW P1420: Secondary Air Injector Valve Circuit Electrical Malfunction
Is your scanner showing BMW P1420?
No worries. We'll show you what it means and how to deal with it.
BMW P1420: Secondary Air Injector Valve Circuit Electrical Malfunction
OVERVIEWWhat Does The BMW P1420 Code Mean?
The Engine Control Module activates the secondary air injection solenoid valve, but the Heated Oxygen Sensor (HO2S) does not detect secondary air injection.
Note: Solenoid valve is closed when no voltage is present.
What Are The Potential Causes Of The BMW P1420 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
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Dorman 911-975 Secondary Air Injection Check Valve Compatible with Select BMW Models
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
BMW P1420, DTCDECODE.
