Throttle Position Control Error
1996-1999 BMW 318i E36 1.9L I4 M44
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
- 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 1996-1999 BMW 318i E36?
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 318i E36?
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 1996-1999 BMW 318i E36?
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.