Code Definition

P0705 — Transmission Range Sensor Circuit malfunction (PRNDL Input)

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0705

P0705 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0705 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0705 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0705 code is set when the Engine Control Module (ECM) or Transmission Control Module (TCM) detects a malfunction in the transmission range sensor circuit. This sensor, also known as the Park/Neutral Position (PNP) switch or PRNDL input, is crucial for indicating the current gear position of the transmission to the ECM/TCM. It plays a key role in starting the vehicle, as well as in managing engine and transmission behaviour based on the selected gear. A malfunction in this sensor circuit can result in incorrect information about the gear position being relayed, potentially leading to issue...

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