P0850 - Park/Neutral Switch Input Circuit
- Faulty Park/Neutral Switch
- Park/Neutral Switch harness is open or shorted
- Park/Neutral Switch circuit poor electrical connection
When is the code detected?
The signal of the park/neutral position (PNP) switch is not changed in the process of engine starting and driving.
- Engine Light ON (or Service Engine Soon Warning Light)
When the shift position is P or N, park/neutral position (PNP) switch is turned ON. The Engine Control Module (ECM) detects the position because the continuity of the line (the ON signal) exists.
The park/neutral position (PNP) switch assembly also indicates a transmission range switch to detect shift lever position.
P0850 Information for specific makes
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