Q: if my transmission fluid was filled a quart over could this cause my reduced engine power light to come on?

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oil can henry's filled my transmission fluid a quart to high. i drove around not knowing this until my next scheduled oil change. now my reduced engine light is on and when i push the gas pedal it will only reach 2000 rpm's. what is the issue, and could the overfilling of the trany fluid cause this problem?

My car has 114000 miles.
My car has an automatic transmission.

Hi there. Usually the reduced power light is caused by an engine component failure, like the throttle body, TPS or bad O2 sensors. It is very possible that the additional transmission fluid has created a trouble code that might have activated a Limp Mode setting for your Chevy. When the internal engine or transmission sensors determine a fault exists inside the transmission (which can be triggered by too much hydraulic pressure due to excessive fluid), it tends to create a limp mode, so you can slowly drive the vehicle to a repair facility. Two things can be done to resolve this issue. First, flush the transmission fluid and change the filter first. Second, a professional mechanic will need to complete a reduced engine power light inspection to deactivate the limp mode; which should resolve this problem. If that doesn’t work, a detailed inspection might be warranted.

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