What does code P1603 mean on BMW vehicles?
The ECU detects an error during the torque monitoring self-test.
OBD-II Code BMW
P1603 — BMW — Control Module Self Test, Torque Monitoring
The ECU detects an error during the torque monitoring self-test.
Common symptoms
- Emergency mode
- reduced engine output
Possible causes
- Internal ECU fault
- software or hardware failure
Initial recommendation
Perform advanced ECU diagnostics and verify torque monitoring systems.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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