Why does the Traction control warning light come on while driving on dry pavement and the engine power is reduced.
There are a few reasons this might happen. Believe it or not it could be as simple as a loose gas cap. That can cause a false reading in the throttle position sensor, and activate the traction control. Remove the gas cap and put it back on making sure to tighten it until it "clicks". Another reason may be a faulty throttle position sensor, or it has a glitch, thus activating thr traction control. Try the "Old Fashioned" fix of disconnecting the battery for about an hour, to reset the computer. After you reconnect it, turn the key to the ON position but don't start it. Slowly press the accellerator to the floor and release. Turn the key back off, wait a few seconds then start the car. This should take care of the glitch, if not it's most likely the throttle position sensor needs to be replaced.
SOURCE: Service Throttle Control
It sounds like these things are all related. When the a computer sees a problem in the Electronic throttle system, it will dissable traction control, and give the reduced engine power alert because the powertrain computer does not know the value of throttle postion.
Codes will need to be scanned in the computersto begin diagnosis.
TechJK
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: my service traction control light keeps on going
I have a 2006 checy impala and the TCS ( TRACTION CONTROL SERVICE) liught came on..What does this mean?
SOURCE: traction light on , reduce engine power lights on
I know this is not a solution but I too started having this same problem today. Start car, runs normal then all the sudden it feels funny, traction control light blinks on and dash displays service traction control-reduced engine power. This causes my car to sputter like it is going to stall I have to pull over and turn my car off and back on to drive off (only for it to do it within the next 10 minutes). I thought turning TC off would work for now just to drive it, no not successful stil does it : ( I TOOK IT TO AUTO ZONE AND HAD IT SCANNED HAD A CODE FOR GROSS EVAC LEAK AND SOMETHING ABOUT THE THROTTLE PLATE/BODY NOT SURE IF THAT IS RELATED BUT THAT ALL THE INFO I HAVE ON THAT.
SOURCE: My 2009 chevy impala service
Have the codes checked. But you probably lost one of the wheel sensors. This will pop the light. When the ECM detects a wheel not move as fast as the others, it sets the light.
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