Neutral Position Sensor A Circuit High

Where it lives

For P086D, the circuit described runs through the sensor. The description of P086D reports a fault at the sensor.

Check these first

• Short to voltage in the neutral position sensor A wiring
• A neutral position sensor A switch stuck open
• A failed neutral position sensor A
• Missing 5 volt supply to sensor A
• A fault in the TCM

What to do next

1. Check the 5 volt supply at neutral position sensor A
2. Inspect the sensor A harness for damage
3. Test the signal wire for a short to power
4. Read neutral position sensor A live data
5. Replace neutral position sensor A if the switch is stuck
6. Clear the code and retest

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