Throttle Position Sensor Disagreement Between Sensors
2002-2005 Ford Explorer 4.6L V8 🇩🇪
Description
The PCM has detected a disagreement between the two throttle position sensors on the electronic throttle body. Modern Ford vehicles use dual TP sensors for safety — if they disagree, the PCM limits engine power.
Symptoms
- Check Engine Light
- Reduced engine power (limp mode)
- Throttle response limited
- Engine may idle only
Common Causes
- Faulty throttle body (integrated TP sensors)
- Wiring issue to one of the TP sensors
- Corroded TP sensor connector
- Carbon buildup affecting throttle plate position
Diagnostic Steps
- Compare TP sensor 1 and TP sensor 2 readings on scan tool
- Check that both sensors track together through full range
- Inspect throttle body connector for corrosion
- Clean throttle body
- Check wiring harness for damage
Repair Notes
Clean throttle body. If sensors disagree, replace throttle body (sensors not separately serviceable on most models).
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
P1574 on Other Vehicles
Common Questions
What does code P1574 mean on a 2002-2005 Ford Explorer?
P1574 stands for "Throttle Position Sensor Disagreement Between Sensors". The PCM has detected a disagreement between the two throttle position sensors on the electronic throttle body. Modern Ford vehicles use dual TP sensors for safety — if they disagree, the PCM limits engine power.
What are the symptoms of P1574 on a Ford Explorer?
Common symptoms of P1574 include: Check Engine Light, Reduced engine power (limp mode), Throttle response limited, Engine may idle only.
What causes P1574 on a 2002-2005 Ford Explorer?
Common causes of P1574 include: Faulty throttle body (integrated TP sensors), Wiring issue to one of the TP sensors, Corroded TP sensor connector, Carbon buildup affecting throttle plate position.