P2441 on Subaru
Secondary Air Injection System Switching Valve Stuck Closed (Bank 1)
P2441 on Subaru vehicles indicates secondary air injection system switching valve stuck closed (bank 1). Au7o has documented this code across 2 Subaru models — most commonly on WRX, WRX STI. P2441 indicates the secondary air injection system switching valve on bank 1 is stuck closed. The secondary air injection system pumps fresh air into the exhaust during cold starts to help the catalytic converter heat up and burn off pollutants faster; a switching valve controls that airflow. When the PCM commands the valve open but airflow doesn't occur as expected, it concludes the valve is stuck closed. This mainly affects cold-start emissions and will fail an emissions test, though drivability is usually normal. Typical repair costs on Subaru range from $600 to $2,200, depending on the specific model and root cause.
Common Causes of P2441
- •Stuck or seized secondary air switching valve (bank 1)
- •Carbon or rust buildup clogging the valve or air passages
- •Failed vacuum/control solenoid for the valve
- •Damaged vacuum lines or electrical connector to the valve
- •Faulty secondary air injection pump
- •Wiring fault in the valve control circuit
- •Moisture/corrosion in the air injection plumbing
P2441 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.
Subaru WRX STI(1 issue)
- Air Injection System (Secondary Air Pump/Valves) Failure (P0410/P244x)2008-2014
Subaru WRX STI models equipped with the EJ257 and secondary air injection commonly develop failures of the air pump and/or the air switching valves, often due to moisture intrusion and internal corrosion that causes the valves to stick. Owners typically see a check engine light with cold-start drivability changes and may fail emissions/inspection due to stored air injection codes. This issue is widely documented in owner reports and Subaru service information/TSBs covering secondary air injection diagnostics and component replacement.
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What does P2441 mean on Subaru?▼
P2441 stands for "Secondary Air Injection System Switching Valve Stuck Closed (Bank 1)." P2441 indicates the secondary air injection system switching valve on bank 1 is stuck closed. The secondary air injection system pumps fresh air into the exhaust during cold starts to help the catalytic converter heat up and burn off pollutants faster; a switching valve controls that airflow. When the PCM commands the valve open but airflow doesn't occur as expected, it concludes the valve is stuck closed. This mainly affects cold-start emissions and will fail an emissions test, though drivability is usually normal. On Subaru specifically, this code is documented across 2 models.
What causes P2441 on Subaru vehicles?▼
Common causes on Subaru: Stuck or seized secondary air switching valve (bank 1), Carbon or rust buildup clogging the valve or air passages, Failed vacuum/control solenoid for the valve, Damaged vacuum lines or electrical connector to the valve, Faulty secondary air injection pump. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2441 on a Subaru?▼
Repair costs on Subaru range from $600 to $2,200, depending on the specific model and root cause.
Which Subaru models have P2441 documented?▼
Au7o has documented P2441 on 2 Subaru models: WRX, WRX STI.