Error code

OBD2 P2441

OBD2P2441
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Secondary Air Injection System Switching Valve Stuck Closed.

Severity

moderateCan drive, but may experience rough idling or hesitation after cold starts.

Summary

P2441 indicates that the secondary air injection system switching valve in bank 1 is stuck closed, preventing proper operation after a cold start.

Symptoms

  • Illuminated warning light
  • Engine may idle roughly or not at all immediately after a cold start
  • Engine may stumble or hesitate upon acceleration after a cold start
  • Increased fuel consumption
  • Vehicle may enter limp mode

Common Causes

  • Defective vacuum check valves
  • Leaking, damaged vacuum lines
  • Damaged wiring and connectors
  • Faulty pressure sensors
  • Defective switch over valve
  • Failed vacuum solenoid
  • PCM failure (rare)

Diagnosis

  1. Clear all codes and record fault data.
  2. Check fuses and relays.
  3. Test vacuum check valves for proper operation.
  4. Inspect secondary air pump function (limited run time).
  5. Examine vacuum lines for damage or leaks.
  6. Test vacuum solenoid with a hand-held vacuum pump.
  7. Visually inspect wiring and connectors.

Fixes

  • Replace defective vacuum check valves, vacuum lines, pressure sensors, switch over valve, or vacuum solenoid as needed.

FAQ

Can I drive with P2441?

Yes, but expect rough idling and hesitation after cold starts.

What causes this code?

Common issues include faulty vacuum check valves, damaged vacuum lines, or a stuck switch over valve.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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