Throttle Position Control Malfunction
2002-2005 Audi A4 3.0L V6
Description
The ECU detected that the electronic throttle body is not achieving the commanded position. The actual throttle opening deviates from the target by more than the allowable tolerance.
Symptoms
- Check Engine Light
- Reduced power mode
- Throttle response sluggish
- Engine may stall
- EPC warning light on
Common Causes
- Carbon buildup on throttle plate
- Faulty throttle body motor
- Throttle position sensor fault
- Wiring issue
- ECU throttle driver failure
Diagnostic Steps
- Perform throttle body adaptation/basic setting
- Clean throttle body
- Test throttle motor by commanding positions
- Check wiring and connector
- Monitor commanded vs actual throttle position
Repair Notes
Clean throttle body and perform adaptation; replace if motor has failed.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1545 on Other Vehicles
Common Questions
What does code P1545 mean on a 2002-2005 Audi A4?
P1545 stands for "Throttle Position Control Malfunction". The ECU detected that the electronic throttle body is not achieving the commanded position. The actual throttle opening deviates from the target by more than the allowable tolerance.
What are the symptoms of P1545 on a Audi A4?
Common symptoms of P1545 include: Check Engine Light, Reduced power mode, Throttle response sluggish, Engine may stall, EPC warning light on.
What causes P1545 on a 2002-2005 Audi A4?
Common causes of P1545 include: Carbon buildup on throttle plate, Faulty throttle body motor, Throttle position sensor fault, Wiring issue, ECU throttle driver failure.