The P0510 code on your 2022 Kia Sportage indicates a malfunction in the closed throttle position switch circuit. This switch tells the ECM when the throttle is fully closed, which is critical for idle control and certain fuel management strategies.
Closed Throttle Position Function
The closed throttle position signal indicates when the driver's foot is off the accelerator. The ECM uses this for idle speed control, deceleration fuel cutoff, and transmission shift strategies. Some systems use a separate switch while others integrate this function into the throttle position sensor.
Sportage Electronic Throttle
The 2022 Sportage uses electronic throttle control where throttle position sensors provide complete position data including closed throttle detection. P0510 may indicate the sensor's minimum position reading doesn't match expected values or a dedicated closed throttle switch has failed.
Common Causes
The throttle position sensor may not read correctly at closed position. Carbon buildup prevents the throttle from fully closing. Throttle body misadjustment affects closed position detection. Wiring issues affect the closed throttle signal. After throttle body cleaning, relearning may be needed.
Diagnostic Process
Use Kia GDS to monitor throttle position at rest. With foot off the pedal, TPS should read near minimum specification. Verify the throttle blade closes completely. Check for carbon deposits preventing full closure. Perform throttle body relearning if needed after any service.