Q: My traction control is off and half of the engine doesn't work, I hooked up a computer to it and the P0800 code is on

asked by on

Half of my engine isn't working properly, I can barely drive on it, it shows the P0800 code is on, but I have no idea on how to fix it, can you send me list of steps that I have to do?

My car has 110000 miles.
My car has an automatic transmission.

Hello, thanks for writing in. P0800 is the trouble code for an issue with the vehicle’s Transfer Case Control system. When the transfer case control module, a computer that is separate from the engine computer, detects an issue with the transfer case systems circuits, or sensors it will send a signal to the engine computer to set off the light.

This can be caused by a few different things. The most common causes are issues with one or more of the 4WD/AWD system’s sensors, actuators, or a wiring issue. As P0800 is a general code, and only indicates that there is some sort of fault, not what the exact fault is.

If there are no other trouble codes present to help identify the specific issue then the vehicle will have to be diagnosed in order to determine what the exact problem is. If you’d like to have this done, consider YourMechanic, as one of our mobile technicians can come to your home or office to diagnose the trouble code further and help you make the necessary repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My traction control is off and half of the engine doesn't work, I hooked up a computer to it and the P0800 code is on

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: High pitch whining from alternator.

This can come from a variety of places other than the alternator such as the transmission. Your car should be equipped with what is called a CVT (constant variable speed transmission) which is notorious for making this kind of a...

Q: Stalling way too much when driving

The engine stalling can be one of the most terrifying things a car can do. We are used to it accelerating when prompted, but when it fails to follow directions, your heart rate can double instantly. The intermittent nature of...

Q: The housing for the starter outside bolt hole is cracked and can't get the bolts to hold the starter in its rightful place 2008 Cadillac Escalade

Hi - while it may be possible to remove the starter and repair the housing (weld and re-drill the hole), the most practical approach is to simply replace the starter. It could well cost just as much to repair it...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.