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Loss of Communication DTC Cross-Reference Chart

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When an ECU on the CAN circuit is unable to communicate with other ECUs on the CAN circuit, the other control units set loss of communication DTCs. Use this chart to find the control unit that is not communicating with the other control units on the CAN circuit.

  1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
  2. Do the input test for the transmitting control unit.

BUS OFF and Internal Error Codes 

BUS OFF AND INTERNAL ERROR CODES REFERENCE CHART

DTC Type Related Unit
MICU Rear MICU Relay Control Module Gauge Control Module Immobilizer-Keyless Control Unit Power Tailgate Control Unit Power Seat Control Unit Door Multiplex Control Unit Headlight Leveling Control Unit BSI Control Unit Left Power Sliding Door Control Unit Right Power Sliding Door Control Unit Climate Control Unit or HVAC Control Unit Parking and Back-Up Sensor System Seat heater Control Unit
BUS OFF U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280
ECU (EEPROM) Error B1002 B1952 B1052 B1152   B1352 B1802   B2479   B2002 B2052   B2602  

Loss of Communication 

LOSS OF COMMUNICATION DTC CROSS-REFERENCE CHART

Transmitting Control Unit Receiving Unit/Loss of Communication DTC
MICU Rear MICU Relay Control Module Gauge Control Module Immobilizer-Keyless Control Unit Power Tailgate Control Unit Power Seat Control Unit Door Multiplex Control Unit BSI Control Unit Climate Control Unit or HVAC Control Unit Parking and Back-Up Sensor System Left Power Sliding Door Control Unit Right Power Sliding Door Control Unit Headlight Leveling Control Unit Seat Heater Control Unit
MICU TX U1281 U1281 U1281 U1281 U1282 U1283 U1281 U1282 U1283   B2969 U1282 U1282 U1281 U1281 B2456 U1282  
Rear MICU   TX                   U1292 U1292    
Relay Control Module U1291 U1291 TX B1158                      
Gauge Control Module U128D U128D U128D TX U128D U0155 U128D U0155 U0155 U0155 U128D U0155 U128D U128D U0155  
Immobilizer-Keyless Control Unit         TX                    
Power Tailgate Control Unit       U0230   TX                  
Power Seat Control Unit             TX                
Door Multiplex Control Unit U0199       U0199 U0199   TX              
BSI Control Unit       U128F         TX            
Climate Control Unit or HVAC Control Unit               U0164   TX         U1064
Parking and Back-Up Sensor System       U1288             TX        
SRS Unit       U0151                      
PCM       U0100                      
VSA Modulator-Control Unit       U0122                      
Left Power Sliding Door Control Unit       B1163               TX U1283    
Right Power Sliding Door Control Unit       B1164                      
HVAC Display Unit       U1296                      
Seat Heater Control Unit                   U1290         TX
TX: Transmitting unit does not set a loss communication DTC.