P0705 — Transmission Range Sensor Circuit Malfunction (PRNDL Input)
Drivable short-term, but fix now to avoid damage.
What P0705 means
This code means the computer detected a problem with the transmission range sensor circuit, which reports the gear position you've selected on the shifter. When this signal is wrong or missing, the transmission doesn't know which gear to engage, leading to shifting issues or no-start conditions. Fixes commonly involve adjusting or replacing the range sensor (neutral safety switch) and repairing related wiring.
Common symptoms
- Check engine light is on
- Engine won't start in Park or Neutral
- Harsh or incorrect shifting
- Gear indicator doesn't match the actual gear
- Transmission stuck in one gear or limp mode
Common causes
- Faulty or misadjusted transmission range sensor
- Worn or damaged neutral safety switch
- Damaged wiring or corroded connectors
- Internal shift linkage or detent problems
- Failing transmission control module
Typical repair cost
$150 – $500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0705 code?
It's best not to. The car may not start reliably or could shift into the wrong gear, which is a safety concern. Have it diagnosed before driving much further.
How much does it cost to fix a P0705 code?
Replacing the transmission range sensor usually costs $150 to $350 including labor. Wiring repairs or shift linkage work can push the total to $500 or more.
Is a P0705 code serious?
Yes, it can be. Because it affects which gear the transmission engages and whether the car starts, it's a safety-related code. It should be addressed quickly.
Why won't my car start with a P0705 code?
The range sensor doubles as the neutral safety switch, which only lets the engine crank in Park or Neutral. If it's faulty, the car may not recognize it's safe to start.