DTC U0198: Lost Communication with Telematic Control Module: Description
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is output when communication stops between the mayday ECU and BUS buffer ECU
DTC DETECTION CONDITION CHART
| DTC Code |
DTC Detection Condition |
Trouble Area |
| U0198 |
No signal from mayday ECU for more than 10 seconds |
- Mayday ECU
- Harness or connector
|