Subaru Fault Code

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P2441

Flashing Cruise / Check Engine Light

System

Emissions / Air Pump

Symptom

Flashing Cruise / Check Engine Light

Diagnosis & fix steps

LOGIC: Secondary Air Injection System Switching Valve Stuck Closed (Bank 1). ACTION: Inspect Bank 1 secondary air valve behind the driver-side cylinder head. Test valve solenoid coil resistance (~10–14Ω); check for heavy carbon crust wedging the reed valve plate shut.

Red Seal field insights

Air Valve Carbon: Exhaust backpressure pushes soot into the secondary air ports, jamming the stainless steel check valve shut and tripping an air injection flow fault on cold starts.

Same code keeps coming back?

That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.

Book an uptime review

Read before you touch anything

  • This is general reference information, not a repair manual. It is for trained, qualified technicians.
  • Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
  • Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
  • You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
  • Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.

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