P0413 on Subaru
Secondary Air Injection System Switching Valve "A" Circuit Open
P0413 on Subaru vehicles indicates secondary air injection system switching valve "a" circuit open. Au7o has documented this code across 1 Subaru model — most commonly on WRX. This code indicates the PCM detected an open electrical circuit for secondary air injection switching valve 'A'. The secondary air injection system pumps fresh air into the exhaust during cold starts to help the catalytic converter heat up quickly and reduce emissions. An open circuit means the valve isn't being controlled properly, which mainly affects cold-start emissions. It usually causes a check engine light without major driveability symptoms. Typical repair costs on Subaru range from $700 to $2,200, depending on the specific model and root cause.
Common Causes of P0413
- •Faulty secondary air injection switching valve
- •Open or broken wiring in the valve circuit
- •Corroded or disconnected electrical connector
- •Blown fuse or relay feeding the valve
- •Poor ground or loss of power to the valve
- •Failing PCM (less common)
P0413 on Subaru by Model
Subaru WRX(1 issue)
- Secondary Air Injection Pump and Switching Valve Failure Triggering CEL and Limp Mode2006-2014
Turbo EJ255/EJ257 WRX models equipped with the secondary air injection system commonly develop failures of the air pump, pressure sensor, or the air switching valves. Moisture intrusion and corrosion can cause the valves to stick or the pump to seize, which sets emissions faults and on many cars can reduce power or force a limp-home condition. Owners typically report a check-engine light shortly after cold start, often with rough cold operation or an audible pump noise before failure.
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What does P0413 mean on Subaru?▼
P0413 stands for "Secondary Air Injection System Switching Valve "A" Circuit Open." This code indicates the PCM detected an open electrical circuit for secondary air injection switching valve 'A'. The secondary air injection system pumps fresh air into the exhaust during cold starts to help the catalytic converter heat up quickly and reduce emissions. An open circuit means the valve isn't being controlled properly, which mainly affects cold-start emissions. It usually causes a check engine light without major driveability symptoms. On Subaru specifically, this code is documented across 1 model.
What causes P0413 on Subaru vehicles?▼
Common causes on Subaru: Faulty secondary air injection switching valve, Open or broken wiring in the valve circuit, Corroded or disconnected electrical connector, Blown fuse or relay feeding the valve, Poor ground or loss of power to the valve. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0413 on a Subaru?▼
Repair costs on Subaru range from $700 to $2,200, depending on the specific model and root cause.
Which Subaru models have P0413 documented?▼
Au7o has documented P0413 on 1 Subaru model: WRX.