What does code P1649 mean on Volkswagen vehicles?
The ECU detects a missing CAN message from the brake control module.
OBD-II Code Volkswagen
P1649 — Volkswagen — Data Bus Powertrain Missing Message from Brake Controller
The ECU detects a missing CAN message from the brake control module.
Common symptoms
- ABS/ESP warning lights
Possible causes
- Brake controller communication fault
Initial recommendation
Diagnose ABS/ESP system and CAN 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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