Q: AT light and Check engine light on stuck in third gear.

asked by on

My car randomly gets stuck in third gear and the AT light appears as well as the check engine light. Any idea?

My car has 262000 miles.
My car has an automatic transmission.

A logical place to start is with a Check Engine Light inspection to see what codes might be set. Usually with something of this nature, codes will be present, and there will be a flow chart that should be used to diagnose what the issue is.

The reports I am reading suggest your Mazda is sensitive to dirty transmission fluid with this issue. Check your transmission fluid. It should be clean and bright red. If it is brown, black, or burnt-looking, you will definitely want to get it flushed.

Each gear has a solenoid that can fail. This is what is likely wrong, but a thorough flush should be done before any repairs are performed. The code you find will determine what is done next.

Good luck!

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. AT light and Check engine light on stuck in third gear.

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: Transmission does not shift

This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

Q: Check engine light on 1998 Audi A4

Any good mechanic can check them out. Here's the problem that you've got though--when there's a linking error, either the nanoport isn't working right because one of the pins is bent or there's wiring short somewhere in the computer system...

Q: VTC problem - 2008 Infiniti FX50S

The engine control system uses the engine oil pressure to control the variable intake valve timing on this model. If the engine oil is low or very dirty it can trigger this type of fault and cause the system to...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.