Throttle Position Sensor
2022 Hyundai Tucson · 2.5L I4
Sensor Type
hall-effect
Waveform Type
dc-variable
Location
Integrated into electronic throttle body assembly on intake manifold, driver's side of engine
Pins
6-pin connector
Timebase
500ms/div
Voltage Scale
1V/div
Trigger
Not applicable for DC sweep
Wiring
TPS1: Yellow (signal), Brown (5V ref), Black (ground) | TPS2: Green (signal), Orange (5V ref), Black (ground)
Expected Voltage Range
At Idle
0.55V to 0.85V
At Higher RPM
4.2V to 4.6V
Expected Pattern
Dual redundant sensors: TPS1 increases 0.6V to 4.5V with throttle opening, TPS2 inversely decreases 4.4V to 0.9V, both signals mirror inversely
Known-Good Waveform
Two separate continuous DC voltage signals that move opposite directions. At closed throttle (idle), TPS1 reads 0.55-0.85V while TPS2 reads 4.15-4.45V. At wide open throttle, TPS1 reads 4.2-4.6V while TPS2 reads 0.9-1.3V. The sum of both sensors should equal approximately 5V at any throttle position, with smooth linear transitions and no dead spots.
Common Failure Patterns
One or both TPS signals showing steps, flat spots, or non-linear voltage changes during smooth throttle sweep
Cause: Carbon buildup on throttle plate causing binding, worn throttle position sensor tracks, or internal throttle body bearing failure
TPS1 and TPS2 voltages not inversely correlated, sum does not equal 5V, or both signals move in same direction
Cause: Internal throttle position sensor circuit failure, corrupted throttle body calibration, or ECM issue
Diagnostic Tips
Electronic throttle body is non-serviceable; requires replacement as assembly if TPS fails. Perform throttle relearn procedure after replacement or battery disconnect using Hyundai GDS scan tool. Check for TSB updates related to throttle response calibration on 2021-2022 models.
Related Diagnostic Trouble Codes
P0120P0121P0122P0123P0124
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
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