P0417: Secondary Air Injection System Switching Valve B Circuit Shorted
What to do
Driveable with no symptom you would notice. Will fail an emissions test.
What this code means
A short on the second secondary air switching valve circuit. As with valve A, disconnecting the valve and re-testing separates an internally shorted winding from a chafed harness — the module will usually have disabled the output after recording the fault, so the valve stops operating rather than operating incorrectly.
Likely causes
Start here
- Open or shorted solenoid winding · easy
- Chafed harness against engine or bracket · moderate
- Damaged wiring harness near exhaust heat · moderate
Rare
- Control module driver failure · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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- The car — make, model, year and engine. The same fault behaves differently on each.
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