Code Definition

B2198 — TrafficMaster Module Error

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B2198

B2198 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B2198 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The B2198 code indicates that the TrafficMaster Module has reported an internal fault or self test failure. The TrafficMaster Module is a vehicle telematics and traffic information unit, typically fitted to UK and European market vehicles, that receives live traffic data via RDS TMC or a dedicated cellular link and feeds congestion and routing information into the navigation and infotainment system. The code is set when the module detects an error in its internal processor, memory, or communication hardware during its self diagnostic routine. When this fault is active, the navigation system ma...

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