In order for the engine control unit to tell what is going on with the throttle body, a throttle position sensor is attached to the butterfly valve shaft. As the throttle opens, the sensor, a variable resistor, allows varying amounts of electricity to flow back to the computer. This information is vital in automatic transmission vehicles, which tries to determine the driver's intentions; suddenly stepping on the throttle will cause some automatic transmission vehicles to shift down a gear, assuming the driver needs the speed to pass a car or avoid a collision. A slow increase in throttle tells the computer speed isn't urgent, and stays in the same gear, or shifts early for fuel economy reasons.
- P0068: MAP/MAF - Throttle Position Correlation
- P0120: Throttle/Pedal Position Sensor A Circuit
- P0121: Throttle/Pedal Position Sensor A Circuit Range/Performance
- P0122: Throttle/Pedal Position Sensor A Circuit Low Input
- P0123: Throttle/Pedal Position Sensor A Circuit High Input
- P0124: Throttle/Pedal Position Sensor A Intermittent
- P0220: Throttle/Pedal Position Switch B Circuit
- P0221: Throttle/Pedal Position Switch B Circuit Range/Performance
- P0222: Throttle/Pedal Position Sensor B Circuit Low Input
- P0223: Throttle/Pedal Position Sensor B Circuit High Input
- P0224: Throttle/Pedal Position Sensor B Circuit Intermittent
- P0225: Throttle/Pedal Position Sensor C Circuit
- P0226: Throttle/Pedal Position Sensor C Circuit Range/Performance
- P0227: Throttle/Pedal Position Sensor C Circuit Low Input
- P0228: Throttle/Pedal Position Sensor C Circuit High Input
- P0229: Throttle/Pedal Position Sensor C Circuit Intermittent
- P0510: Closed Throttle Position Switch Malfunction
- P1120: Secondary Throttle Position Sensor (STPS) (Infiniti)
- P1121: Throttle Position (TP) Sensor Inconsistent With MAF Sensor High Voltage
- P1121: Pedal Position 1 Range/Performance Problem (BMW)
- P1122: Throttle Position (TP) Sensor Inconsistent With MAF Sensor Low Voltage
- P1122: Pedal Position 1 Low Input (BMW)
- P1123: Pedal Position 1 High Input (BMW)
- P1124: TPS Out Of Self Test Range (Ford)
- P1124: TPS Out Of Self Test Range (Mazda)
- P1125: TPS Intermittent (Ford/Infiniti)
- P1125: Tandem Throttle Position Sensor (Mazda)
- P1142: TPS Circuit Range/Perf. Problem (Low Input) (Subaru)
- P1298: Lean Operation At wide Open Throttle (Chrysler, Jeep)
- P1524: Throttle Position (TP) Sensor Learned Closed Throttle Angle Degrees Out-Of-Range
- P1524: "A" Camshaft Position Actuator Signal High Bank 1 (BMW)
- P1525: Throttle Position (TP) Sensor Learned Closed Throttle Angle Degrees Out-Of-Range
- P1579: Park/Neutral to Drive/Reverse At High Throttle Angle
- P1580: Throttle Valve Mechanically Stuck (BMW)
- P1631: Throttle Position Sensor Signal Too High (Volkswagen)
- P1632: Throttle Position Sensor Supply Voltage (Volkswagen)
- P1700: TPS Circuit Malfunction For Automatic Transmission (Subaru)
- P1705: Throttle Position Sensor (Nissan, Infiniti)
Related OBD-II Codes
- Throttle Body
- List of Engine Sensors
- Intake System
- Idle Air Control Valve
- Drive by Wire
- Manifold Absolute Pressure Sensor