OBD Guide

P0850

Park/Neutral Switch Input Circuit

P0850 is an OBD-II diagnostic trouble code meaning: Park/Neutral Switch Input Circuit. Common causes: faulty park/neutral sensor, open or short circuit in the circuit. Estimated repair cost: $6–33.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–33 (est.)

Symptoms

  • Engine won't start
  • Check Engine Light Is On
  • Gear shifting problems
  • Incorrect selector lever position readings

Causes

  • Faulty park/neutral sensor
  • Open or short circuit in the circuit
  • Poor connections or corrosion
  • Wiring Harness Problems
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the condition of the parking/neutral sensor
  2. Check the integrity of the circuit and connection
  3. Clean contacts from corrosion
  4. Replace sensor if necessary
  5. Check and replace wiring harness if damaged

Related codes

Error P0850 by Vehicle Brand

FAQ

What does the P0850 code mean?

P0850 is an OBD-II diagnostic trouble code that indicates: Park/Neutral Switch Input Circuit

What causes a P0850 error code?

The most common causes of P0850 include: Faulty park/neutral sensor; Open or short circuit in the circuit; Poor connections or corrosion; Wiring Harness Problems.

How do I fix a P0850 diagnostic trouble code?

To fix P0850: Check the condition of the parking/neutral sensor. Check the integrity of the circuit and connection. Clean contacts from corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0850?

Yes, but get it checked soon

How much does it cost to fix P0850?

The estimated repair cost for P0850 is $6–33. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat