What Does the Engine Code P0706 Mean?

If your car is showing the P0706 engine code, you’re dealing with a faulty transmission range sensor switch.
Written by Talullah Blanco
Reviewed by Melanie Reiff
If your car is displaying the P0706 engine code, your transmission range sensor circuit is not properly communicating data to the engine control module. Take your car to a mechanic to fix your transmission range sensor before your car stops running. 
When your car displays a diagnostic trouble code, it’s indicating a component of your vehicle’s engine is not functioning properly. With over 5,000 diagnostic trouble codes, it’s important to understand what the specific engine code displayed on your dashboard means. 
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What does the engine code P0706 mean?

Definition: Transmission range sensor circuit performance
If your car is displaying the P0706 engine code, it’s likely a faulty transmission range sensor switch, sometimes called a neutral position switch in older vehicles. This component of your transmission determines its speed and tells your car when to switch gears. 

How much will it cost to fix?

The final price to repair or replace a transmission range sensor switch is the total cost of parts and labor. Depending on the location of the auto repair shop, the make, and model of your car, it can cost $250 to $300 to replace a transmission range sensor switch.

What can cause the P0706 engine code?

When your car shows the P0706 engine code, there’s an issue with your transmission range sensor switch. Potential transmission range sensor switch issues include:
  • Faulty transmission range sensor switch
  • Misadjusted transmission range sensor switch
  • The transmission range sensor switch harness is open or shorted
  • Poor electrical connection 

Common symptoms of the P0706 engine code

Your check engine light will be displayed on your dashboard and the other symptoms that accompany this engine code will affect the drivability of your car. 
  • Poor shifting or inability to switch gears
  • Decreased acceleration
  • Poor fuel efficiency
  • Your vehicle may go into “limp” mode
There’s an issue with the transmission range sensor switch if you can’t start your car, it starts in the wrong gear, the transmission is struggling to change gear, or the gear slips.  

How serious is the P0706 engine code? 

If your car is showing the 90706 engine code, the transmission range sensor switch should be inspected, repaired, or replaced by a mechanic as soon as possible.
Continuing to drive and ignoring this issue could cause further damage to your transmission and render your car unusable. 

Can I fix the P0706 engine code myself?

Because there are several repairs that can fix a P0706 engine code, it’s recommended you take your car to a professional for diagnostic testing to find the right source of the problem and properly fix it. Depending on the source of the problem you may need to:
  • Flush and fill the transmission fluid
  • Repair or replace any damaged or faulty wiring or connectors
  • Check battery voltage level
  • Repair or replace damaged circuits or connectors
  • Repair or replace damaged or defective transmission range sensors
  • Clear all codes, test drive, and rescan the vehicle to see if codes reappear
While minor repairs can be done at home, you may have misdiagnosed the P0706 engine code and other repairs may be necessary.  

Replacing the transmission range sensor switch

If you need to replace your car’s transmission range sensor switch and decide to do it yourself, follow these steps:
  • Disconnect the car’s battery before beginning repairs
  • Raise the vehicle using a floor jack and lower it onto the jack stands
  • Locate the transmission position center
  • Remove the harness from the sensor 
  • Remove the mounting bolts and sensor from the transmission
  • Reinstall the mounting bolts
  • Plugin the harness to the new sensor and install it onto the transmission
After reconnecting the battery, you should test drive the vehicle to check if the transmission is shifting correctly, the engine light comes on, or any engine codes reappear.

Finding insurance for your vehicle

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