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Code

P0850

Transmission

Park / neutral position switch malfunction

The park/neutral position switch circuit has a fault.

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Most likely causes

Faulty P/N switch
Misadjusted linkage
Wiring fault

Symptoms you may notice

No start in P or N
Wrong gear indicator
Limp mode

Checks to run

Test switch positions
Adjust linkage
Check wiring

Tools you may need

Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Transmission

Transmission control system malfunction

Transmission range sensor (PRNDL) circuit malfunction

Output shaft speed sensor circuit malfunction

Incorrect gear ratio

Torque converter clutch circuit stuck off

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