The ECM has detected an implausible or erratic signal from the Transmission Range (TR) sensor, which tells the ECM/TCM which gear (Park, Reverse, Neutral, Drive) the shifter is in.
SeverityModerate
CategoryTransmission
Est. Repair Cost$100–$400
Code TypePowertrain
DIY RepairYes
⚡ Common Causes
›Faulty neutral safety switch
›Wiring fault
›Misadjusted selector lever
›Failed TR sensor
⚠️ Symptoms
›Vehicle does not start in park
›Wrong gear indicated
›Erratic shifting
✅ How to Fix — Step by Step
Step 1:Check TR sensor adjustment
Step 2:Inspect wiring
Step 3:Replace TR sensor
Step 4:Adjust shift linkage
💡 Pro Tip: Confirm the vehicle actually starts only in Park/Neutral before replacing the sensor — if it starts in other gears too, the fault is almost certainly the sensor or its adjustment, not the shifter cable.
Repair Cost Estimate
Full Repair Estimate
$100–$400
DIY Possible?
YES
Severity
Moderate
Frequently Asked Questions
What does OBD2 code P0705 mean?+
P0705 stands for Transmission Range Sensor Circuit Malfunction. The ECM has detected an implausible or erratic signal from the Transmission Range (TR) sensor, which tells the ECM/TCM which gear (Park, Reverse, Neutral, Drive) the shifter is in.
