OBD Guide

P086A

Neutral Position Sensor A Circuit/Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Difficulty starting the engine
  • Incorrect operation of the gearbox
  • Check Engine Light Is On
  • The vehicle may not recognize the neutral position
  • Activating the emergency transmission mode

Causes

  • Neutral position sensor circuit open
  • Poor contact in the sensor connector
  • Malfunction of the neutral position sensor itself
  • Wiring harness damage
  • Problems with the engine control unit (ECU)

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect and clean connector contacts
  3. Check sensor resistance (compare with manufacturer specifications)
  4. Replace neutral position sensor if necessary
  5. Check the operation of the system after repair

Related codes

Error P086A by Vehicle Brand