Throttle Position Control Error
2001-2002 BMW M Roadster E36/7 3.2L I6 S54
Description
The DME detected that the electronic throttle body is not reaching its commanded position. The actual throttle opening does not match the DME-requested opening, indicating a throttle actuator or sensor malfunction.
Symptoms
- Check Engine Light
- Reduced power mode (limp mode)
- Poor throttle response
- Engine may idle only
- Throttle warning light
Common Causes
- Carbon buildup on throttle blade
- Faulty throttle body actuator motor
- Throttle position sensor failure
- Wiring issue to throttle body
- DME throttle driver failure
Diagnostic Steps
- Perform throttle body adaptation reset with scan tool
- Clean throttle body
- Test throttle position sensor voltages
- Inspect wiring to throttle body
- Test throttle motor by commanding positions
Repair Notes
Clean throttle body and perform adaptation; replace throttle body if actuator motor has failed.
Related Codes
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1545 on Other Vehicles
Common Questions
What does code P1545 mean on a 2001-2002 BMW M Roadster E36/7?
P1545 stands for "Throttle Position Control Error". The DME detected that the electronic throttle body is not reaching its commanded position. The actual throttle opening does not match the DME-requested opening, indicating a throttle actuator or sensor malfunction.
What are the symptoms of P1545 on a BMW M Roadster E36/7?
Common symptoms of P1545 include: Check Engine Light, Reduced power mode (limp mode), Poor throttle response, Engine may idle only, Throttle warning light.
What causes P1545 on a 2001-2002 BMW M Roadster E36/7?
Common causes of P1545 include: Carbon buildup on throttle blade, Faulty throttle body actuator motor, Throttle position sensor failure, Wiring issue to throttle body, DME throttle driver failure.