Code result

P0850

Park/Neutral Switch Input Circuit

Moderate severity

What it means

The ECU detects implausible park/neutral position switch input. The signal does not match the gear lever position reported by the TCM.

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

  • PNP switch failed

    high

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

  • Switch misaligned

    medium

    A plausible cause — test and verify before replacing parts.

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