P0850 fault code: what it means

P0850: Park/neutral position (PNP) switch input to the ECM is wrong. Can cause no-start in P/N, wrong idle control, or stop/start not working.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

transmission range switch faulty or misadjusted
wiring open or shorted
selector cable out of adjustment

P0850 by make

Nissan

Park/neutral position (PNP) switch input to the ECM is wrong. Can cause no-start in P/N, wrong idle control, or stop/start not working.

Usual causes: transmission range switch faulty or misadjusted; wiring open or shorted; selector cable out of adjustment

What the repair usually costs

Crankshaft or camshaft position sensor replaceNZ$100–NZ$590 · A$100–A$580

Not sure what P0850 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.