Error code

OBD2 P0271

OBD2P0271
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Cylinder 4 Injector Circuit High.

Severity

moderateCan drive, but may experience reduced fuel efficiency and rough idling.

Summary

P0271 indicates an issue with the fuel injector circuit for cylinder 4, specifically that it is reading too high (positive). This problem can affect engine performance.

Common Causes

  • Wiring short to positive
  • Faulty injector in cylinder 4
  • ECM malfunction

Fixes

FAQ

What does P0271 mean?

P0271 means there is an issue with the fuel injector circuit for cylinder 4, likely due to a wiring problem or faulty component.

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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