P2441 on Lexus
Secondary Air Injection System Switching Valve Stuck Closed (Bank 1)
P2441 on Lexus vehicles indicates secondary air injection system switching valve stuck closed (bank 1). Au7o has documented this code across 1 Lexus model — most commonly on GX. 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 Lexus range from $800 to $2,000, 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 Lexus by Model
Lexus GX(1 issue)
- Secondary Air Injection Pump Failure2003-2009
The secondary air injection (SAI) system pump and switching valves fail due to moisture intrusion and corrosion. The SAI pump introduces fresh air into the exhaust during cold starts to reduce emissions, but the pump motor corrodes internally and the switching valves stick. This triggers a check engine light with SAI-related codes.
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What does P2441 mean on Lexus?▼
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 Lexus specifically, this code is documented across 1 model.
What causes P2441 on Lexus vehicles?▼
Common causes on Lexus: 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 Lexus?▼
Repair costs on Lexus range from $800 to $2,000, depending on the specific model and root cause.
Which Lexus models have P2441 documented?▼
Au7o has documented P2441 on 1 Lexus model: GX.