Code result

P0181

Fuel Temperature Sensor A Circuit Range/Performance

Moderate severity

What it means

The fuel temperature sensor A signal is within electrical limits but inconsistent with plausibility checks (e.g. doesn't change with engine warmup, disagrees with ambient temperature).

Is it safe to drive?

Use caution

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

  • Sensor reading drifted

    high

    One of the most commonly reported causes for this code — check this first.

  • Sensor stuck at fixed value

    medium

    A plausible cause — test and verify before replacing parts.

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