P2100
Throttle Actuator Control Motor Circuit Open
1995-1999 BMW 318ti E36 1.9L I4 🇨🇦
Critical SeverityPowertrain
Description
Open circuit detected in the electronic throttle body motor drive circuit.
Symptoms
- Reduced power/limp mode
- Check engine light
- Throttle unresponsive
- Engine may not rev above idle
Common Causes
- Failed throttle body motor
- Broken wiring
- Corroded connector
- ECM driver failure
Diagnostic Steps
- Check throttle body connector
- Measure motor resistance (2-7 ohms typical)
- Inspect wiring to ECM
- Test ECM motor driver output
Repair Notes
Replace throttle body assembly or repair wiring. ECM replacement rarely needed.
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
P2100 on Other Vehicles
Common Questions
What does code P2100 mean on a 1995-1999 BMW 318ti E36?
P2100 stands for "Throttle Actuator Control Motor Circuit Open". Open circuit detected in the electronic throttle body motor drive circuit.
What are the symptoms of P2100 on a BMW 318ti E36?
Common symptoms of P2100 include: Reduced power/limp mode, Check engine light, Throttle unresponsive, Engine may not rev above idle.
What causes P2100 on a 1995-1999 BMW 318ti E36?
Common causes of P2100 include: Failed throttle body motor, Broken wiring, Corroded connector, ECM driver failure.