P0850 Buick Park/Neutral Switch
Possible causes
– Misadjusted Park/Neutral Switch
– Faulty Park/Neutral Switch
– Park/Neutral Switch harness is open or shorted
– Park/Neutral Switch circuit poor electrical connection
– Faulty Park/Neutral Switch
– Park/Neutral Switch harness is open or shorted
– Park/Neutral Switch circuit poor electrical connection
What about the obd code?
The signal of the park/neutral position (PNP) switch is not changed in the process of engine starting and driving.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0850 Buick Description
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.
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera