Transmission Range Sensor Circuit Range/Performance
What does P0706 mean?
The P0706 code means the vehicle's onboard diagnostic system has detected: Transmission Range Sensor Circuit Range/Performance. This is a serious severity code.
Common Symptoms
- Vehicle starts in gear without pressing brake
- Reverse lights on in Drive
- Transmission shifts incorrectly or not at all
- Check Engine Light on
Probable Causes (Ranked by Likelihood)
- Failed or misadjusted transmission range sensor (neutral safety switch) Very High
- Damaged wiring or connector at range sensor Moderate
- Sticking shift cable not moving the range sensor properly Moderate
Step-by-Step Diagnostic Procedure
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Move the shifter through all positions while monitoring range sensor position on a scan tool. Each position should show a unique signal.
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Inspect range sensor adjustment -- most require alignment with the shift lever in Park.
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Test continuity of each circuit in the range sensor connector per the wiring diagram.
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Inspect the shift cable for binding or incorrect adjustment.
Frequently Asked Questions
What is the transmission range sensor?
The transmission range sensor (also called the neutral safety switch or multi-function switch) tells the TCM and ECM which gear the driver has selected. It also controls the reverse lights and prevents the engine from starting in gear.