The codes are reported to the Triumph Diagnostic Tool as a four digit code.
The system will log the Diagnostic Trouble Codes listed below:
| Diagnostic Trouble Code (DTC) | Fault Description | Warning Light/Information |
| L0001 | Front wheel sensor unit battery alert | For low battery Voltage -lo bAtt visible in the instrument display screen. the TPMS symbol in the display screen will indicate which sensor has low battery Voltage.For zero battery Voltage - Only dashes will be visible in the instrument display screen, TPMS warning light ON and the TPMS symbol in the display screen will flash ON and OFF |
| L0002 | Rear wheel sensor unit battery alert | |
| L0003 | Front wheel sensor unit fault alert | TPMS warning light ON and the TPMS symbol in the display screen will flash ON and OFF |
| L0004 | Rear wheel sensor unit fault alert | |
| L0005 | Front wheel sensor unit loss of communication error | |
| L0006 | Rear wheel sensor unit loss of communication error | |
| L0007 | Immobiliser ECM fault | |
| L0008 | Invalid key: Key authentication unsuccessful | Alarm/Immobiliser light ON |