DTC P1421 BMW
Secondary Air Injector Valve Circuit Short to Ground
Secondary Air Injector Valve Circuit Short to Ground
Description
The Engine Control Module detects a short circuit to ground when activating the secondary air injection solenoid valve. The air mass is greater than 12 but less than 152 m kg h, coolant temperature is greater than 3 but less than 75 degrees Celsius, intak
Cause and Solution
Connector to the secondary air injection valve is loose or disconnected
Secondary air injector valve circuit short
Secondary air injector valve circuit is open
Video Guide
Diagnostic Info
- DTC Code: P1421
- Brand: BMW