P0413

Secondary Air Injection System Switching Valve "A" Circuit Open

Severity: Low
Driving: Drivable — book it in

The circuit for secondary air injection switching valve "A" is open - a broken wire, a disconnected plug, or a failed valve winding. The module cannot operate the valve at all.

Possible causes

CommonOpen winding in the valve solenoid
CommonBroken wire or disconnected connector
CommonCorroded connector at the valve
PossibleBlown fuse on the circuit
RareFailed control module driver

What you might notice

Check engine light on
Failed emissions test
Secondary air system inoperative
Usually no symptom the driver notices

What to check, in order

Check the connector is actually plugged in. This valve sits in a part of the engine bay that gets disturbed during other work.
Measure the valve winding resistance - an open circuit reading confirms a failed valve.
Check continuity through the wiring between the module and the valve.
Check the fuse for the circuit.
Inspect the harness for heat damage near the exhaust.

Read this code from your own car

Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.

Get Pin16 on Google Play

Where this code sits

B · Body C · Chassis P · Powertrain U · Network and communication

Auxiliary emission controls