I have had this problem for a couple of months took it in twice and they run the check engine but found nothing wrong. The lights went off and came on again and trully the engine reduces power like you are pressing the brakes. I could feel that. Scarry as I was driving on the freeway with my precious children with me. How do we solve this issue?
Engine power reduced
problem is the main culprit ! This has to do with the electronic throttle control system . Computer controlled throttle control . The Gas pedal assembly has position sensors as does the throttle body . These are inputs to the PCM/ECM - engine computer . By the signal from the gas pedal the PCM / ECM will control a DC electric motor on the throttle body ,opening an closing the throttle plate .When there is a problem with this system the check engine light comes on and the PCM/ECM will disable traction control an that light will be turned on etc..... These problems can be very tough to find . How much are you willing to spend to track down this problem . Need special tool's to find these problems . Electrical test scope (lab scope ) . Over time these parts wear an the PCM will see conflicting signals . Sometimes the part needs to wear out to find the problem . Have the repair shop keep the vehicle till they find the problem .
Throttle Actuator Control System
Drive by Wire Function and diagnostics by Wells
SOURCE: The "engine power is reduced" light comes on
po455 is Probable Cause[s]
1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.
SOURCE: reduced engine power on
The traction control uses the speed sensor in the transmission and the wheel speed sensors to determine wheel spin. If a wheel spins braking is applied to it so that the power can be transferred to the other wheels. At some point the ECU detected a gross disagreement between the sensors and so as a precaution has entered into a limp home mode. On some systems if the fault is in error it can be cleared by putting the car into drive and moving forward a meter, putting in reverse and going a back a meter and doing this three times. If one or other of the sensors are faulty this process will not allow the error to be cleared. You need to check or have checked the error codes and the speed sensors.
SOURCE: error message "reduce traction control" and then
Thwe check engine light is on because the computer has detected a problem. Take the car to Autozone and they will scan it for free and tell you what the problem is. If you have a question, let me know. I am here to help you.
SOURCE: Traction control light on and engine power reduced
you could have a stuck switch .....check your traction control switch on your dashboard....engage and disengage it , while paying attention to the rpms...notice any change...if you do notice a change, then replace the switch....if no change, it is probably on the trans itself and should not be a dealer only fix....your local reliable trans shop should be able to fix you up without emptying your entire wallet.
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