Skip the auto shop - Our mechanics make house calls

P0708 OBD-II Trouble Code: Transmission Range Sensor Circuit High Input

Check Engine Light

P0708 Code Definition

Transmission Range Sensor Circuit High Input

What the P0708 code means

The P0708 trouble code means that the Engine Control Module (ECM) has detected a malfunction with the transmission range sensor.

What are the causes of the P0708 code?

  • A misadjusted transmission range sensor
  • A faulty transmission range sensor
  • Damaged or disconnected wiring that is associated with the transmission range sensor
  • A faulty ECM

What are the symptoms of the P0708 code?

  • Hard shifting
  • Transmission slippage
  • Transmission will not shift at all
  • Check Engine Light illumination

How does a mechanic diagnose the P0708 code?

A mechanic would begin the diagnosis of the P0708 trouble code by finding the manufacturer’s suggested procedure for adjustment of the transmission range sensor and attempt to correct its adjustment. If an adjustment does not resolve the issue, the mechanic would then test the transmission range sensor per the manufacturer’s recommendations.

If the sensor or any wiring in the circuit is found to be defective during diagnosis, replacement of these parts would be required to resolve this issue. If all of these parts are in good working order, it is possible that the ECM is at fault.

Common mistakes when diagnosing the P0708 code

A common mistake would be to replace the transmission range sensor without checking to see if the manufacturer has specified an adjustment for it. If the transmission sensor is possible to adjust, the adjustment may resolve the issue.

How serious is the P0708 code?

I would consider the P0708 trouble code to be very serious. This not only causes drivability issues, but it also risks serious damage to the transmission.

Some vehicles have a fail-safe mode that it may go into when this code is stored that will limit engine power and vehicle speed in order to help prevent or reduce transmission damage.

It would be best to have this trouble code diagnosed and repaired as soon as possible.

What repairs can fix the P0708 code?

  • Adjusting the transmission range sensor
  • Replacing the transmission range sensor
  • Repairing or replacing wiring that is associated with the transmission range sensor
  • Replacing the ECM

Additional comments regarding the P0708 code?

It is important to keep up on transmission maintenance as doing so may prevent trouble codes such as the P0708, as well as internal transmission damage. Having services such as a transmission flush and filter replacement at the recommended intervals can drastically improve the life of your transmission and all of its electronics.

Need help with a P0708 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: my 2008 yukon was in two accidents in 30 min. i now have codes popping up i have had a check tire monitir system, air suspension a

It sounds as though the trouble codes are probably a result of the accidents. With no warnings prior to them, and now having them on, I can only assume that this was the cause. But, it would be necessary to...

Q: Miss firing cylinder

Hello. If there is a cylinder misfire then it is not advisable to drive the vehicle. You can drive it for short periods of time and short distances but the more you drive it you run the risk of further...

Q: ECU and related components

Your ECU would have to be programmed. Although it is possible nowadays for consumers to download the software from the OEM for a fee, you need an interface cable and knowledge of the programming steps. Once you add up the...