Powertrain
generic / SAE
P0416
Secondary Air Injection System Switching Valve B Circuit Open
AIR system switching valve A drive circuit open — solenoid winding or harness break. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 16
Possible causes
- Open winding or wire high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–500 €
- Estimated time: 0.5–2.5 h
- Component: secondary air injection valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012