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

asked by on

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.

Was this answer helpful?
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. if my transmission fluid was filled a quart over could this cause my reduced engine power light to come 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: Service stabilizer and traction control warning is on.

Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...

Q: Lost oil pressure.

Sounds like it could be the oil pressure sensor. Have a technician test the sensor to determine if it is bad and if it needs to be replaced. I definitely would not drive it until that is checked because you...

Q: I was going through the undercarriage wash at carswash n my f150 shut off...i could start itup right away again it showed low oil

Since the vehicle stalled it would display the low oil pressure until you started it back up. The fact that the outside temperature is so cold and the water hot it could of got into a wire connector that caused...

Related articles

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...
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...
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.