P2444: Secondary Air Injection System Pump Stuck On (Bank 1)
3 vehicles · 2 makes · $300-$3,000 repair
Most Reported On
P2444 is an OBD-II diagnostic trouble code meaning “Secondary Air Injection System Pump Stuck On (Bank 1).” This powertrain/emissions code means the secondary air injection (AIR) pump for bank 1 appears to be stuck in the 'on' position, continuing to push air when it should be off. The secondary air system briefly pumps fresh air into the exhaust after a cold start to help the catalytic converter heat up and reduce emissions. The computer detected airflow or pressure when none was expected. This is mainly an emissions concern but, if ignored, can affect the air-fuel mixture and over time stress emissions components. This code is most commonly reported on 2008-2019 Toyota Sequoia, 2006-2014 Subaru WRX, and 2005-2009 Toyota 4Runner, with repair costs ranging from $300 to $3,000.
Common Causes
Typical Repair Cost
Based on 3 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2444, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (3)
FAQ
What does P2444 mean?
P2444 stands for "Secondary Air Injection System Pump Stuck On (Bank 1)." This powertrain/emissions code means the secondary air injection (AIR) pump for bank 1 appears to be stuck in the 'on' position, continuing to push air when it should be off. The secondary air system briefly pumps fresh air into the exhaust after a cold start to help the catalytic converter heat up and reduce emissions. The computer detected airflow or pressure when none was expected. This is mainly an emissions concern but, if ignored, can affect the air-fuel mixture and over time stress emissions components.
What are the most common causes of P2444?
The most common causes of P2444 are: Faulty secondary air injection pump (running continuously), Stuck-open air switching/check valve, Wiring or relay fault keeping the pump powered, Faulty pump control relay, Connector corrosion or short in the AIR circuit, Faulty engine control module (rare). The specific cause varies by vehicle.
How much does it cost to fix P2444?
Repair costs for P2444 range from $300 to $3,000, depending on the vehicle and root cause.
Which vehicles are affected by P2444?
Au7o has documented P2444 across 3 vehicle models from 2 manufacturers: Subaru, Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.