Transmission Range Sensor Circuit Malfunction
The P0706 code indicates that the Powertrain Control Module (PCM) has detected an issue with the transmission range sensor (TRS) circuit. This sensor tells the PCM which gear position (Park, Reverse, Neutral, Drive) the transmission is in. A range/performance problem means the signal from the sensor is out of expected parameters, often due to a faulty sensor, wiring issues, or a misadjusted shift linkage.
01. Most Common Causes
- Faulty transmission range sensor
- Damaged or corroded wiring/connectors
- Misadjusted shift linkage
- Internal transmission mechanical issue
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission stuck in one gear or fails to shift
- Incorrect gear display on dashboard
- Engine starts in any gear (safety issue)
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P0706 is present.
Step 2: Inspect transmission range sensor connector and wiring for damage or corrosion.
Step 3: Test sensor resistance and voltage per manufacturer specifications.
Step 4: Check shift linkage adjustment and operation.
Step 5: If all else fails, replace the transmission range sensor.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The transmission may not shift correctly or could engage unexpectedly, leading to loss of control or transmission damage.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. The sensor itself is $50-$150, and labor is 1-2 hours.