Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light is on and transmission problem

asked by on

I have 2 issues. One on my dashboard just said service engine soon it blinked than went away what does that mean. Another it feels like something is wrong with my transmission. It sometime jerks whn I take off or when I accelerate it make a huge thud sound what does that mean

My car has 169574 miles.
My car has an automatic transmission.

Hello, What you are describing sounds like a transmission that may be low on transmission fluid or potentially have some internal component problems such as a faulty solenoid or bad control module. When the transmission is not functioning properly, this may also cause the check engine light to come on as you have described. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The transmission control module has various sensors such as vehicle speed sensors, wheel speed sensors, throttle position sensors, turbine speed sensor, and transmission fluid temperature sensors that all direct information to it in order for it to perform it’s function. Other functions controlled by the TCM are components such as a kick down switch, traction control system, and cruise control module. Any of these may also affect the way the transmission control module performs and controls the transmission and the shifting of your vehicle. I would suggest having a professional from Your Mechanic come to your location to properly diagnose your transmission problem.

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
  1. Home
  2. Questions
  3. Check Engine Light is on and transmission problem

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: how to remove black case for front plug wires

You will need to support the motor with a jack underneath and remove the motor mount bracket (so the plug wire cover can then be opened to get the plug wires out). If you do not remove the motor mount...

Q: All my gears work but drive and 3rd gear

Hello, thank you for writing in. The vehicle is likely experiencing issues with the transmission. The first step to take is having the vehicle scanned for diagnostic codes, and use them to help point you in the right direction. If...

Q: SMG transmission cannot be put into gear, fluid leaks

Hello. It sounds to me like the problem was either misdiagnosed or improperly repaired. If the problem was misdiagnosed, the issue would still be occurring because it was never addressed in the first place. If the problem was improperly repaired,...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.