P2100
Throttle Actuator Control Motor Circuit Open
2014-2021 BMW i3 Range Extender
Critical SeverityPowertrainGeneric (SAE)
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
- 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
P2100 on Other Vehicles
Common Questions
What does code P2100 mean on a 2014-2021 BMW i3?
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 i3?
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 2014-2021 BMW i3?
Common causes of P2100 include: Failed throttle body motor, Broken wiring, Corroded connector, ECM driver failure.