Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
Throttle Position (TP) sensor is a variable resistor located on throttle body which monitors throttle opening and delivers input signals to Engine Control Module (ECM). ECM uses input signals for determining vehicle driving conditions and adjusts air/fuel mixture accordingly. DTC is set after vehicle speed is more than 19 MPH once and TP sensor output voltage is out of range while vehicle speed is 0-19 MPH. Possible cause is defective TP sensor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.