You might need to take into the service dealer. or
If you are DIY minded you can get an OBD2 Diagnostic tool, about £25 for a basic one,but the sky's the limit. Available from ebay.
My local garage wanted £100 to diagnose, so a good investment.
These have a more accurate fault finding by way of fault codes. Take careful note of all letters and numbers before resetting system. If fault returns then I advise looking up fault codes online and deal with them. If the fault keeps bringing up the fault light, Do not keep resetting. investigate with the help of the fault codes, and repair before resetting.
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: cruise control will not 'set' on '05 kia sportage
Check the brake lighf bulbs. If even one is burnt out, it throws the sensors.
Had the same problem replaced both bulbs and now the esp light stays off and the cruise control sets.
SOURCE: engine power is reduced keeps showing on the dash
how do you fix the "reduced engine power" light on the dash bard of a 07 Chevy Impala LTZ and "Service Traction Control"?
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.
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