Skip the auto shop - Our mechanics make house calls

Q: Saturn Ion wont change to 4th gear, its an automatic. The P0700 code comes up saying transaxal module. What does this means?

asked by on

4th gear in automatic transmission wont catch/ change. P0700 code comes up saying transaxal module. What does this means on my 2006 Saturn Ion.

My car has 172143 miles.
My car has an automatic transmission.

Hello. The code means there is either an electrical or mechanical (hydraulic) fault in the transmission, or the transmission "controls" and in your case that fault is causing your transmission not to shift. The fault itself can range from the incredibly mundane (a mouse chewed through a wire in the electronic control segment; a harness plug connector is corroded) to a real pain the neck which would be a faulty valve or solenoid in the transmission itself (in the "valve body"), although often even that issue can be repaired without removing the transmission.

The mechanic would diagnose for an open or short in the wiring harness, a faulty transmission control module, or a transmission valve body fault including a failure of an electronically controlled shift solenoid. Although the issue you are describing is troubling, it is fairly common. For example, it is not unusual at all for shift solenoids to fail. If they do, there will be no, or possibly erratic shifting. Some car models have been more prone to this issue than others. An expert from YourMechanic could diagnose this shifting issue for you and get you on your way to a professional repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • Saturn Ion wont change to 4th gear, its an automatic. The P0700 code comes up saying transaxal module. What does this means?

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: I replaced pcm and now I'm getting code u0100 and p0700. Battery is new and not holding enough bolts. Something is draining it. Wh

To determine if the cause of those two codes is low voltage, I would simply fix the parasitic power draw first, reset the PCM (erase the codes) and see if the problem recurs. The cost to resolve such an electrical...

Q: Stuck intake valve

Hello. I am assuming that you are referring to the intake valve that is located inside of the engine. If my assumption is correct, the only way to fix this issue is to have the cylinder head replaced or rebuilt....

Q: Understanding Main Gears Vs. Planetary Gears?

There is often a debate among expert mechanics about what type of transmission system is the most efficient and effective method of applying horsepower to the wheel. Some believe that automatic transmissions are best suited for consumers that commute frequently,...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.