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P0149 Powertrain

Fuel Timing Error

Injection timing deviates from target. Often caused by chain wear, sensor offset, or injector response drift.

Affected components

  • Timing chain
  • Fuel injectors
  • Crankshaft position sensor

Common causes

  • High likelihood: Timing chain stretched

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions
  • A drive cycle may be required after repair
  • Reduced-power or limp mode may occur

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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