P2105critical severityPowertrain
Throttle Actuator Control System Forced Engine Shutdown
on 1998 BMW 528i 2.8L I6 M52 · RWD
What this code means
ECM shut down the engine due to a critical electronic throttle control fault.
Symptoms
- Engine stalls and won't restart
- Check engine light
- Multiple warning lights
Common causes
- Severe throttle control fault
- APP sensor failure
- Critical wiring damage
- ECM hardware failure
Diagnostic steps
- Check for other DTCs
- Inspect APP sensors
- Check throttle body
- Verify ECM power and grounds
Repair notes
Diagnose root cause immediately. This indicates a safety-critical throttle system failure.
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Other Powertrain codes on this vehicle
29CC
Misfire Cylinder 1
29CD
Misfire Cylinder 2
29CE
Misfire Cylinder 3
29CF
Misfire Cylinder 4
29D0
Misfire Cylinder 5
29D1
Misfire Cylinder 6
29D2
Misfire Cylinder 7
29E0
Lambda Additive/Idle Adaptation Limit, Bank 1
29E1
Lambda Additive/Idle Adaptation Limit, Bank 2
29E2
Lambda Multiplicative Part-Load Adaptation Limit, Bank 1