Conditions for Setting the DTC
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
P086A
The ECM detects an open in the neutral position sensor circuit.
P086B
The neutral position sensor is stuck in range.
P086C
The neutral position sensor voltage is less than 0.1 V for greater than 1 s.
P086D
The neutral position sensor voltage is greater than 5.2 V for greater than 1 s.