Transmission Range Sensor Circuit Range/Performance
Your transmission's position sensor is sending a signal that's outside its normal operating range, like a speedometer needle stuck between readings. The engine computer can't reliably determine if your transmission is in Park, Drive, Reverse, or Neutral.
The ECM monitors voltage from the Transmission Range Sensor (PRNDL switch) to identify gear position. The sensor produces distinct voltage levels for each gear; if the signal falls outside expected ranges or shows inconsistent transitions, a fault is detected.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor Voltage | 0.2V-4.8V (varies by gear position) | Outside expected range or erratic fluctuation |
| Signal Consistency | Stable voltage per gear selection | Jumping between voltage levels or noise detected |
Code P0707 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0707 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.