How much does it cost to fix P0706?

DIY repair typically costs $25–$150 for parts. Professional repair runs $150–$450 including parts and labor.

P0706

Powertrain

Moderate

Transmission Range Sensor "A" Circuit Range/Performance

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The P0706 code means the transmission range sensor is sending a signal to the PCM, but the signal is outside the expected performance range. Think of it as the sensor giving readings that don't quite make sense — for example, it might report a gear position that's between two valid positions, or the voltage may be drifting outside of normal parameters. This is different from P0705, which indicates a complete circuit malfunction.

When this code is active, you'll likely notice erratic shifting behavior, as the transmission control module can't reliably determine what gear the driver has selected. The gear indicator on the dashboard may flicker or show incorrect information. In some cases, the vehicle may have trouble starting because the PCM can't confirm the transmission is in Park or Neutral.

Start your diagnosis by checking the shifter cable or linkage for proper adjustment — if the cable has stretched over time, it can cause the sensor to read between positions. Next, inspect the sensor's wiring and connector for damage or corrosion. If the mechanical adjustments check out, the sensor itself likely needs replacement. The repair is usually straightforward and affordable, especially if the sensor is externally mounted on the transmission.

Severity

Moderate — Address SoonThis Week

Symptoms

•Transmission shifts erratically or at wrong times
•Gear position indicator flickers or shows incorrect gear
•Vehicle hesitates or jerks when shifting
•Difficulty starting the engine
•Transmission enters limp mode (stuck in one gear)
•Check engine light illuminated

Likely Causes

Worn or failing transmission range sensor35%

Unlike P0705 which indicates a total circuit failure, P0706 means the sensor is producing a signal but it's outside the expected range — typically indicating a sensor that is degrading or producing erratic readings.

Misadjusted range sensor or shifter linkage30%

If the shift cable or linkage has stretched or the sensor has shifted position, the electrical signal won't match the actual gear selector position, causing range/performance errors.

Damaged wiring or poor connector contact20%

Intermittent contact in the wiring harness or loose pins in the connector can cause the signal to fluctuate outside the normal operating parameters expected by the TCM.

Low or contaminated transmission fluid15%

Some vehicles with internal transmission range sensors can be affected by low fluid levels or debris in the fluid, which interferes with the sensor's operation.