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P0186 Powertrain

Fuel Temperature Sensor B Circuit Range / Performance

Fuel temperature sensor B reading is within electrical limits but implausible (no warmup change, disagrees with sensor A or ambient).

Affected components

  • Fuel temperature sensor b

Common causes

  • High likelihood: Sensor drifted
  • Medium likelihood: Sensor stuck

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions

Related codes

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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