P0705: Transmission Range Sensor Circuit (PRNDL Input)

What does P0705 mean?

The transmission range/PRNDL input has a circuit fault. The controller may not know whether Park, Reverse, Neutral, or a drive range is selected, affecting starting permission, shift behavior, or reverse lights.

Generic OBD-II definition: Transmission Range Sensor Circuit (PRNDL Input). Confirm applicability in your vehicle service information.

Common causes

• Faulty or misadjusted range sensor
• Corroded connector or chafed wiring
• Shift-linkage adjustment problem

Symptoms

• No crank or starts only in Neutral
• Incorrect gear display or reverse lights
• Unexpected shifting

Diagnostic focus

Do not bypass a neutral-safety interlock to get the engine started. A range fault can permit unsafe starting or movement and needs a proper adjustment/circuit diagnosis.

Can I keep driving with P0705?

Severity: High Keep the vehicle secured and do not drive if the selected gear, displayed gear, or starting interlock is unreliable. Arrange diagnosis rather than bypassing the range/neutral-safety system.

If the check engine light is flashing or the car runs badly, stop driving and have it checked.

Typical fixes

• Secure the vehicle with parking brake and wheel chocks
• Compare selected gear with range data
• Inspect linkage adjustment and test the sensor circuit

Sources & review

• OBD-Codes.com: P0705
• TroubleCodes.net: generic code definitions

Definitions and diagnostic background checked 2026-11-06. Generic guidance, not a substitute for the service procedure for your exact year, engine, and transmission.