Error code

OBD2 P2274

OBD2P2274
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

O2 Sensor Signal Stuck Lean.

Severity

moderateCan be driven, but may experience poor performance and increased emissions.

Summary

P2274 indicates that the heated oxygen sensor (H028) on bank 1 is reporting a signal that is stuck in a lean condition, meaning it's detecting too little fuel in the exhaust.

Common Causes

  • Wiring issues
  • Faulty H025 sensor
  • Low fuel pressure
  • Malfunctioning injectors
  • Intake air leak

Fixes

FAQ

What does P2274 mean?

P2274 indicates that the heated oxygen sensor (H028) on bank 1 is reporting a signal that is stuck in a lean condition, meaning it's detecting too little fuel in the exhaust.

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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