P2104
Throttle Actuator Control System Forced Idle
1997-2000 BMW 528i E39 2.8L I6
Critical SeverityPowertrainGeneric (SAE)
Description
ECM has forced the engine to idle speed only due to a detected throttle control fault.
Symptoms
- Engine stuck at idle
- Check engine light
- Vehicle barely moves
- Traction control light on
Common Causes
- Throttle body failure
- APP sensor fault
- Wiring issue
- ECM detected conflicting throttle signals
Diagnostic Steps
- Scan for other DTCs
- Check APP sensor signals
- Inspect throttle body
- Clear codes and test
Repair Notes
Diagnose root cause from accompanying DTCs. This is a protective measure.
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
P2104 on Other Vehicles
Common Questions
What does code P2104 mean on a 1997-2000 BMW 528i E39?
P2104 stands for "Throttle Actuator Control System Forced Idle". ECM has forced the engine to idle speed only due to a detected throttle control fault.
What are the symptoms of P2104 on a BMW 528i E39?
Common symptoms of P2104 include: Engine stuck at idle, Check engine light, Vehicle barely moves, Traction control light on.
What causes P2104 on a 1997-2000 BMW 528i E39?
Common causes of P2104 include: Throttle body failure, APP sensor fault, Wiring issue, ECM detected conflicting throttle signals.