Error code

OBD2 P2180

OBD2P2180
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

System Too Rich Off Idle.

Severity

moderateCan be driven, but may experience poor fuel economy and engine performance.

Summary

P2180 indicates that the engine's air-fuel mixture is too rich (too much fuel) when transitioning from idle to higher RPMs, specifically in bank 2 of a V-engine or similar configuration.

Common Causes

  • Faulty adaptive heated oxygen sensor (H02S) in bank 2
  • Wiring issues or short circuits affecting the H02S signal
  • Restricted air intake system
  • Fuel pressure regulator malfunction

Fixes

FAQ

What does P2180 mean?

P2180 indicates that the engine's air-fuel mixture is too rich (too much fuel) when transitioning from idle to higher RPMs, specifically in bank 2 of a V-engine or similar configuration.

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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