Can You Figure Out Which Throttle Body Sensor Might Be Faulty???
2020 KTM Duke 250 - Uncontrolled High RPM (5k-7k) & Idle Issues
Hey everyone,
I’m dealing with an issue on my 2020 KTM Duke 250 (30k km) where the RPMs climb to 5,000–7,000 without throttle input and stay there.
The Symptoms:
Cold starts are normal, but giving any throttle (even in neutral) causes the RPMs to lock high. Turning the key off sometimes resets it temporarily, but it returns while riding. Intermittent Check Engine Light (comes on and goes off after a few days).
Troubleshooting Done So Far:
Throttle Body: Cleaned and inspected; looks good.
Stepper Motor (IACV): Replaced. The bike initially wouldn't start. Pushing the valve pin manually lets it idle briefly before stalling.
MAP Sensor: Replaced; no change.
TPS (Throttle Position Sensor): Waiting on the replacement part to arrive.
Has anyone experienced this exact issue? Could a failing TPS be the culprit, or am I missing something? Appreciate any advice!