P0416
Secondary Air Injection System Switching Valve B Circuit Open
Generic code
Auxiliary Emissions Control
Medium severity
Moderate repair
Free on OBD DashX
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What P0416 means
- The fault code P0416 indicates that there is an issue with the circuit that controls the secondary air injection system switching valve B. This may cause the vehicle to fail an emissions test, run poorly or not start at all.
Possible symptoms
- Illuminated check engine light
- Failed emissions test
- Rough idle or stalling
- Reduced engine power or acceleration
- Increased emissions output
Possible causes
- Failed secondary air injection system switching valve B
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed engine control module (ECM)
Related parts
- Exhaust Pipe Air Injection: Air is injected into the exhaust gases for better combustion of unburnt fuel and pollutants. This allows better exhaust emission. Problems lead to harmful emissions out of limit
Possible solutions
- Replace the secondary air injection system switching valve B
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0416 on OBD DashX
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