Loss of Communication DTC Cross-ence Chart
When an ECU on the CAN circuit is unable to communicate with other ECUs on the CAN circuit, the other control units will set loss of communication DTCs. Use this chart to find the ECU that is not communicating with the other ECUs on the CAN circuit.
1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs that you retrieved.
2. Do the input test for the transmitting control unit.
BUS OFF and Internal Error Codes
| DTC Type | Related Unit | |||||||
| Body Control Module | Gauge Control Module | Climate Control Unit / HVAC Control Unit | Front Seat Heater Control Unit | Multiplex Control Unit, Door (Power Window Master Switch) | Keyless Access Control Unit | Keyless Access Power Control Unit | Keyless Access Backup Control Unit | |
| BUS OFF | U1280 | U1280 | U1280 | U1280 | U1280 | U1280 | U1280 | U1280 |
| ECU (EEPROM) Error | B1002 | B1602 | ||||||
| DTC Type | Related Unit | |||||||
| Immobilizer-Keyless Control Unit | Automatic Lighting Control Unit-Sensor | Power Seat Control Unit | Power Tailgate Control Unit | Relay Control Module | Parking and Back-Up Sensor Control Unit | Wireless Charger | BSI Radar Unit | |
| BUS OFF | U1280 | U1280 | U1280 | U1280 | U1280 | U1280 | U1280 | U1280 |
| ECU (EEPROM) Error | B1902 | B1802 | B1352 | B1052 | B2602 | |||
Loss of Communication
| Transmitting Control Unit | Receiving Unit/Loss of Communication DTC | |||||||
| Body Control Module | Gauge Control Module | Climate Control Unit / HVAC Control Unit | Front Seat Heater Control Unit | Multiplex Control Unit, Door (Power Window Master Switch) | Keyless Access Control Unit | Keyless Access Power Control Unit | Keyless Access Backup Control Unit | |
| Body Control Module | TX | U1281 | U1281 | U1281 | U1281 | U1281 | U1281 | |
| Gauge Control Module | U128D | TX | U128D | U128D | U128D | U128D | U128D | |
| Climate Control Unit / HVAC Control Unit | TX | U1064 | U1299 | |||||
| Front Seat Heater Control Unit | U1290 | TX | ||||||
| Relay Control Module | U1291 | |||||||
| Parking and Back-Up Sensor Control Unit | U1288 | |||||||
| BSI Radar Unit | U128F | |||||||
| PCM | U0100 | U0100 | U0100 | |||||
| TCM | U0101 | |||||||
| Millimeter Wave Radar | U0104 | |||||||
| Real Time AWD Control Unit | U0114 | |||||||
| VSA Modulator-Control Unit | U0122 | U0122 | U0122 | |||||
| Electric Parking Brake Control Unit | U0128 | |||||||
| EPS Control Unit | U0131 | |||||||
| SRS Unit | U0151 | |||||||
| Multipurpose Camera Unit | U129C |
| Transmitting Control Unit | Receiving Unit/Loss of Communication DTC | |||||||
| Immobilizer-Keyless Control Unit | Automatic Lighting Control Unit-Sensor | Power Seat Control Unit | Power Tailgate Control Unit | Relay Control Module | Parking and Back-Up Sensor Control Unit | Wireless Charger | BSI Radar Unit | |
| Body Control Module | U1281 | U1281 | U1281 | U1281 | U1281 | U1281 | U1281 | U1281 |
| Keyless Access Control Unit | U1286 | |||||||
| Gauge Control Module | U0155U128D | U128D | U128D | U128D | U128D | U0155 | U128D | U128D |
| Audio Unit / Audio-Navigation Unit | U128E | |||||||
| Multiplex Control Unit, Door (Power Window Master Switch) | U0199 | U0199 | U0199 | |||||
TX: Transmitting units do not set loss of communication DTCs.