OBD-II Generic Error Code P0707: How to Fix Transmission Range Sensor Circuit Low

Q: Can I drive with a P0707 code?

It's not safe. The car may not start, shift erratically, or get stuck in one gear, which could cause an accident or transmission damage.

Q: Will a bad transmission range sensor cause no start?

Yes. If the PCM doesn't detect the correct gear (especially Park or Neutral), it may disable the starter to prevent the car from moving when started.

Q: How much does it cost to fix P0707?

DIY: $30-$100 for the sensor. Professional: $150-$300 including labor and diagnosis.

Q: Is the transmission range sensor the same as the neutral safety switch?

Yes, they are often the same component. It tells the PCM which gear is selected and prevents starting in non-Park/Neutral.

Q: What tools do I need to fix code P0707?

A multimeter, OBD2 scanner, socket set, and electrical contact cleaner. A wiring diagram can help.

Abstract

Error code P0707 means your car's transmission range sensor (also called the neutral safety switch) is sending a low voltage signal to the PCM. This often prevents the engine from starting or causes erratic shifting. You can diagnose and fix this issue yourself with basic tools, but some cases require a professional.