What causes a P0850 code?

Common causes: Failed neutral safety switch; Wiring; Failed PCM.

What are the symptoms of a P0850 code?

Typical symptoms: No-crank in P/N; Starts in gear; CEL.

Yes — this code is generally safe to drive with, but address it soon to avoid escalation. Estimated repair: $100-$500.

OBD-II Code · Powertrain

Park/Neutral Switch Input Circuit

medium severitySafe to drive$100-$500

PCM is not getting an expected signal from the park/neutral safety switch.

Common symptoms

Likely causes

Where to start

Try the cheapest cause first. Start by checking: failed neutral safety switch.
Cost & scope. $100-$500
If the code returns after the fix: escalate to a shop or scanner with live-data and freeze-frame. A code that re-sets means the underlying fault is still there.

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