Throttle Position Sensor (TPS)
The throttle position sensor tells the engine control unit how far the throttle valve is open.
What is Throttle Position Sensor (TPS)?
In electronic throttle bodies there are two sensors for safety. It may be a potentiometer or a contactless Hall sensor. It is part of the throttle body on modern cars. The two signals usually move in opposite directions or with an offset so the control unit can spot a fault. A plausibility code is typical when they disagree.
How it works
The output voltage rises as the throttle opens.
Why it matters for your car
Faults cause hesitation, erratic idle and limp mode. Throttle bodies may need adaptation after cleaning or replacement.
Other terms
- Agreed Value Insurance
- Alloy Wheel
- Automatic High Beam
- Bumper Cover (Bumper Fascia)
- Clutch Kit
- Corrosion (Rust)
- Cylinder Block (Engine Block)
- E10 Petrol
- ECU (Engine Control Unit)
- Emergency Brake Signal (Flashing Brake Lights)
- Ethanol Fuel (E10, E85)
- Ground Strap (Earth Strap)
- Intake Manifold
- Jump-start
- Mechanic’s Stethoscope
- Off-Peak Charging
- Payload
- Reversing Light Switch
- Third-Party Liability Insurance
- Valve Spring