Skip the auto shop - Our mechanics make house calls

Q: Transmission slipping and Check Engine Light is on

asked by on

When warmed up the check engine light comes on and the transmission slips and trust to go into gear while brake is applied

My car has 200000 miles.
My car has an automatic transmission.

Hi there. From your description of the transmission slipping when warm, leads me to believe, the transmission fluid is not low. The vehicle’s computer is, apparently, recognizing the fault and turns the Check Engine Light on. Accessing the codes stored may help with the diagnoses. Slipping in and out of gear while brake is applied seems unusual. Possibly a poor electrical connection at the transmission? I recommend having your vehicle’s slipping transmission inspected and diagnosed by a certified technician, like one from YourMechanic.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Transmission slipping and Check Engine Light 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: How to check iac harness

The IAC harness all 4 wires go to the computer and will have 12 volts only on two wires and the other two are used by the computer to control the IAC using ground signal on these other two wires....

Q: Brakes

If you check the brake master cylinder reservoir to see if it is low on fluid. If the fluid level is good and pedal is going to the floor still then you most likely have a bad master cylinder leaking...

Q: why won't my overdrive work

Hi there. The overdrive clutches in the transmission could be slipping causing the transmission not to shift into overdrive. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission.

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...