What does code P1770 mean on BMW vehicles?
The ECU detects an error in the CAN torque interface communication.
OBD-II Code BMW
P1770 — BMW — CAN Torque Interface
The ECU detects an error in the CAN torque interface communication.
Common symptoms
- Limp mode activation
- reduced engine performance
Possible causes
- CAN communication fault
- module data mismatch
Initial recommendation
Perform CAN network diagnostics and verify torque interface communication.
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.
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