Skip the auto shop - Our mechanics make house calls

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: A logical place to start is with a Check En...

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 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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: i need the location of the shift solenoid

Hello. The shift solenoid is located in the valve body assembly which is within the transmission. Typically, these solenoids can be replaced without removing the transmission but the job requires care and attention to detail. Of course, if you are...

Q: Code p0421

Are there other codes set? This code, by itself, P0421 indicates that the engine management system detected the catalytic converter is performing below expected standards. This means the engine is sending contaminants (unburned fuel, oil fumes, etc.) down the exhaust,...

Q: code p0446

Hi there. A P0446 (evaporative emissions system gross leak detected-Toyota defined meaning) sets when there is a fault detected in the evaporative system. The evaporative system is an emissions system responsible for preventing the leakage of fuel vapor into the...

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...
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...
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...