Skip the auto shop - Our mechanics make house calls

Q: O/D off sensor lit up on the dashboard.

asked by on

When I first start my truck up for the day or I'm stopped at stop signs/red lights, my truck will stall when I try to accelerate, it'll jump, then go slow and the cycle repeats. I noticed on the dash there was a flickering sensor that read "O/D off" I took it to a mechanic and he advised me it was my transmission. He said he can rebuild and install it with all the necessary work it needs for the truck to start working again. I would like to know if this sounds like a legit diagnosis including the estimate he gave me. The mechanic gave me an estimate of $975.
My car has an automatic transmission.

Hi there. I recommend changing the transmission fluid first to see if there is any contanimates in the oil and filter. If the fluid is dirty then the sensors will not work very good. If the fluid is good and new, then the sensor needs to be replaced as it could be damaged. You will need to check resistance on the overdrive sensor and if its working properly then the overdrive clutch could be slipping. If you need further assistance with your warning lights for your transmission, then seek out a professional, such as one from Your Mechanic, to help you.

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!

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: Is it safe to drive with overdrive on or overdrive off?

Hi, thanks for your question. This is usually dependent on your driving conditions and habits. Overdrive is an extra higher gear in your transmission designed to increase fuel economy and drivability in freeway or long steady drive conditions. This does...

Q: my car dont shift in high gears, but the transmission is good.

Hello. There are quite a few different parts that can cause this. It can be a transmission speed sensor, but a bad or defective throttle sensor can also cause this. If this started right after the throttle sensor was replaced,...

Q: CHT Sensor location

The cylinder head sensor is on the passenger side head in the back of the head under the intake manifold. In order to replace the sensor the manual states it is required to remove the intake manifold for access to...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...