DTC Troubleshooting Index
NOTE:
Record all DTCs, and sort them by DTC type using the DTC troubleshooting index, then troubleshoot the DTC(s) in this order:
- Battery voltage DTCs
- Internal error DTCs
- Loss of communication DTCs
- Signal error DTCs
MICU
DTC TROUBLESHOOTING CHART - MICU
| DTC | Description | DTC Type |
|---|---|---|
| B1002 | MICU internal (EEPROM) error | Internal error |
| B1036 | IG1 power supply circuit malfunction | Signal error |
| B1275 | Headlight switch OFF position circuit malfunction | Signal error |
| B1276 | Headlight switch PARKING position circuit malfunction | Signal error |
| B1277 | Headlight switch AUTO position circuit malfunction | Signal error |
| B1278 | Headlight switch ON position circuit malfunction | Signal error |
| B1279 | Dimmer switch circuit malfunction | Signal error |
| B1280 | Turn signal switch circuit malfunction | Signal error |
| B1281 | Front wiper MIST position circuit malfunction | Signal error |
| B1282 | Front wiper INT (AUTO) position circuit malfunction | Signal error |
| B1283 | Front wiper LOW position circuit malfunction | Signal error |
| B1284 | Front wiper HIGH position circuit malfunction | Signal error |
| B1575 | Auto light sensor circuit malfunction | Signal error |
| U0199 | MICU lost communication with door multiplex control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U128D | MICU lost communication with gauge control module | Loss of communication |
| U1291 | MICU lost communication with relay control module (RM frame) | Loss of communication |
Rear MICU
DTC TROUBLESHOOTING CHART - REAR MICU
| DTC | Description | DTC Type |
|---|---|---|
| B1028 | Rear window auto stop switch malfunction | Signal error |
| B1952 | EEPROM abnormal | Internal error |
| U1280 | Rear MICU communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Rear MICU lost communication with MICU (MICU frame) | Loss of communication |
| U128D | Rear MICU lost communication with gauge control module (AT frame) | Loss of communication |
| U1291 | Rear MICU lost communication with relay control module (RM frame) | Loss of communication |
Relay Control Module
DTC TROUBLESHOOTING CHART - RELAY CONTROL MODULE
| DTC | Description | DTC Type |
|---|---|---|
| B1052 | Relay control module internal (EEPROM) error | Internal error |
| B1075 | Headlight switch back-up circuit malfunction | Signal error |
| B1076 | Windshield wiper switch back-up circuit malfunction | Signal error |
| B1077 | Wiper switch (As) malfunction | Signal error |
| B1079 | Daytime running light malfunction | Signal error |
| B1080 | Power supply circuit (IG1 line) input error for relay control module and MICU | Signal error |
| U1280 | Relay control module communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Relay control module lost communication with MICU (MICU frame) | Loss of communication |
| U128D | Relay control module lost communication with gauge control module (VSP/NE frame) | Loss of communication |
Door Multiplex Control Unit
DTC TROUBLESHOOTING CHART - DOOR MULTIPLEX CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1125 | Driver's power window motor A pulse malfunction | Signal error |
| B1126 | Driver's power window motor B pulse malfunction | Signal error |
| B1127 | Driver's door Lock key cylinder switch malfunction | Signal error |
| B1128 | Driver's door lock switch malfunction | Signal error |
| B1129 | Driver's door lock knob switch malfunction | Signal error |
| B1130 | Front Passenger's power window motor A-phase pulse signal input error | Signal error |
| B1131 | Front Passenger's power window motor B-phase pulse signal input error | Signal error |
| B1140 | Driver's power window position detect circuit malfunction | Signal error |
| B1142 | Power window master switch lost communication with the other units (UART communication error) | Signal error |
| B1145 | Front passenger's window position detect circuit malfunction | Signal error |
| U0155 | Door multiplex control unit lost communication with gauge control module | Loss of communication |
| U0164 | Door multiplex control unit lost communication with climate control unit | Loss of communication |
| U1280 | Door multiplex control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Door multiplex control unit lost communication with MICU | Loss of communication |
| U1283 | Door multiplex control unit lost communication with MICU (DRLK frame) | Loss of communication |
Gauge Control Module
DTC TROUBLESHOOTING CHART - GAUGE CONTROL MODULE
| DTC | Description | DTC Type |
|---|---|---|
| B1152 | Gauge control module internal (EEPROM) error | Internal error |
| B1158 | Gauge control nodule lost communication with relay control module (RM frame) | Loss of communication |
| B1163 | Gauge control module lost communication with left power sliding door control unit (PSDL frame) | Loss of communication |
| B1164 | Gauge control module lost communication with right power sliding door control unit (PSDR frame) | Loss of communication |
| B1175 | Fuel level sensor (Fuel gauge sending unit) circuit malfunction | Signal error |
| B1176 | Fuel level sensor (Fuel gauge sending unit) circuit short | Signal error |
| B1192 | Gauge control module lost communication with the battery sensor (UART line) | Loss of communication |
| U0029 | F-CAN communication line error | Loss of communication |
| U0100 | Gauge control module lost communication with PCM | Loss of communication |
| U0122 | Gauge control module lost communication with VSA modulator-control unit (VSA message) | Loss of communication |
| U0127 | Gauge control module lost communication with TPMS control unit (TPMS message) | Loss of communication |
| U0151 | Gauge control module lost communication with SRS unit (SRS message) | Loss of communication |
| U0230 | Gauge control module lost communication with power tailgate control unit | Loss of communication |
| U1280 | Gauge control module communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Gauge control module lost communication with MICU (MICU frame) | Loss of communication |
| U1288 | Gauge control module lost communication with PARKSR | Loss of communication |
| U128F | Gauge control module lost communication with BSI control unit (BSI message) | Loss of communication |
| U1296 | Gauge control module lost communication with HVAC display unit | Loss of communication |
Headlight Leveling Control Unit
DTC TROUBLESHOOTING CHART - HEADLIGHT LEVELING CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B2456 | Headlight leveling control unit lost communication with MICU (Headlight message) | Loss of communication |
| B2476 | Front suspension stroke sensor circuit malfunction | Signal error |
| B2477 | Rear suspension stroke sensor circuit malfunction | Signal error |
| B2479 | Headlight leveling control unit (EEPROM) error | Internal error |
| B2480 | Output shaft (countershaft) speed sensor malfunction | Signal error |
| B2481 | Vehicle speed signal error | Signal error |
| B2482 | Combination light switch signal error | Signal Error |
| U0155 | Headlight leveling control unit lost communication with gauge control module | Loss of communication |
| U1280 | Headlight leveling control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Headlight leveling control unit lost communication with MICU | Loss of communication |
Climate Control Unit
DTC TROUBLESHOOTING CHART - CLIMATE CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U0155 | Climate control unit lost communication with gauge control module | Loss of communication |
| U1281 | Climate control unit lost communication with MICU (WIPSW message) | Loss of communication |
| U128D | Climate control unit lost communication with gauge control module | Loss of communication |
| U1290 | Climate control unit lost communication with seat heater control unit | Loss of communication |
| B1215 | An open or short in the recirculation control motor circuit | Signal error |
| B121D | Hum-temp sensor communication error (An open or short in the humidity sensor circuit) | Loss of communication |
| B1225 | An open in the in-car temperature sensor circuit | Signal error |
| B1226 | A short in the in-car temperature sensor circuit | Signal error |
| B1227 | An open in the outside air temperature sensor circuit | Signal error |
| B1228 | A short in the outside air temperature sensor circuit | Signal error |
| B1229 | An open in the sunlight sensor circuit | Signal error |
| B1230 | A short in the sunlight sensor circuit | Signal error |
| B1231 | An open in the evaporator temperature sensor circuit (front) | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit (front) | Signal error |
| B1233 | An open in the air mix control motor circuit (driver's) | Signal error |
| B1234 | A short in the air mix control motor circuit (driver's) | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (driver's) | Signal error |
| B1236 | An open in the passenger's air mix control motor circuit | Signal error |
| B1237 | A short in the passenger's air mix control motor circuit | Signal error |
| B1238 | A problem in the passenger's air mix control motor circuit, linkage, door, or motor | Signal error |
| B1239 | An open or short in the mode control motor circuit (front) | Signal error |
| B1240 | A problem in the mode control motor circuit, linkage, door, or motor (front) | Signal error |
| B1241 | A problem in the blower motor circuit (front) | Signal error |
| B2965 | Rear communication failure | Loss of communication |
| B2967 | An open in the humidity sensor circuit | Signal error |
| B2968 | A short in the humidity sensor circuit | Signal error |
| B2969 | Climate control unit lost communication with MICU (WIPSW message) | Loss of communication |
| B2979 | An open in the A/C pressure sensor circuit | Signal error |
| B2980 | A short in the A/C pressure sensor circuit | Signal error |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor | Signal error |
HVAC Control Unit
DTC TROUBLESHOOTING CHART - HVAC CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U0155 | HVAC control unit lost communication with gauge control module | Loss of communication |
| U128D | HVAC control unit lost communication with gauge control module | Loss of communication |
| B1215 | An open or short in the recirculation control motor circuit | Signal error |
| B1231 | An open in the evaporator temperature sensor circuit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit | Signal error |
| B1233 | An open in the air mix control motor circuit (front) | Signal error |
| B1234 | A short in the air mix control motor circuit (front) | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (front) | Signal error |
| B1239 | An open or short in the mode control motor circuit (front) | Signal error |
| B1240 | A problem in the mode control motor circuit, linkage, door, or motor (front) | Signal error |
| B1241 | A problem in the blower motor circuit (front) | Signal error |
| B2965 | Rear communication failure | Loss of communication |
| B2979 | An open in the A/C pressure sensor circuit | Signal error |
| B2980 | A short in the A/C pressure sensor circuit | Signal error |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor | Signal error |
Rear Climate Control Unit
DTC TROUBLESHOOTING CHART - REAR CLIMATE CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1221 | An open in the rear mode control motor circuit | Signal error |
| B1222 | A short in the rear mode control motor circuit | Signal error |
| B1223 | A problem in the rear blower motor circuit | Signal error |
| B1244 | An open in the rear air mix control motor circuit | Signal error |
| B1245 | A short in the rear air mix control motor circuit | Signal error |
| B1246 | A problem in the rear air mix control motor circuit, linkage, door, or motor | Signal error |
| B1248 | A problem in the rear mode control motor circuit, linkage, doors, or motor | Signal error |
Rear HVAC Control Unit
DTC TROUBLESHOOTING CHART - REAR HVAC CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1213 | An open in the rear evaporator temperature sensor circuit | Signal error |
| B1214 | A short in the rear evaporator temperature sensor circuit | Signal error |
| B1221 | An open in the rear mode control motor circuit | Signal error |
| B1222 | A short in the rear mode control motor circuit | Signal error |
| B1223 | A problem in the rear blower motor circuit | Signal error |
| B1244 | An open in the rear air mix control motor circuit | Signal error |
| B1245 | A short in the rear air mix control motor circuit | Signal error |
| B1246 | A problem in the rear air mix control motor circuit, linkage, door, or motor | Signal error |
| B1248 | A problem in the rear mode control motor circuit, linkage, doors, or motor | Signal error |
Seat Heater Control Unit
DTC TROUBLESHOOTING CHART - SEAT HEATER CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1C55 | Driver's heater thermistor circuit open | Signal error |
| B1C56 | Driver's heater thermistor circuit short | Signal error |
| B1C57 | Passenger's heater thermistor circuit open | Signal error |
| B1C58 | Passenger's heater thermistor circuit short | Signal error |
| B1C60 | Driver's heater current abnormal high | Signal error |
| B1C61 | Driver's heater current abnormal low | Signal error |
| B1C62 | Passenger's heater current abnormal high | Signal error |
| B1C63 | Passenger's heater current abnormal low | Signal error |
| B1C68 | Driver's heater not heating | Signal error |
| B1C69 | Passenger's heater not heating | Signal error |
| B1C70 | Driver's main heater switch failure | Signal error |
| B1C71 | Passenger's main heater switch failure | Signal error |
| U1064 | Seat heater control unit lost communication with climate control unit | Loss of communication |
| U1280 | Seat heater control unit communication bus line error (BUS-OFF) | Loss of communication |
Power Seat Control Unit
DTC TROUBLESHOOTING CHART - POWER SEAT CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1802 | Power seat control unit failure | Internal error |
| B1825 | Slide pulse error (no change in pulse for 1 second) | Signal error |
| B1826 | Front height pulse error (no change in pulse for 1 second) | Signal error |
| B1827 | Rear height pulse error (no change in pulse for 1 second) | Signal error |
| B1828 | Driver's seat recline motor pulse error | Signal error |
| B1829 | AT-P signal and VSP signal have an illegal combination | Signal error |
| B1836 | Power seat position sensor circuit short | Signal error |
| B1837 | Memory position calling timeout | Signal error |
| B1843 | UART communication error | Loss of communication |
| B1844 | Power seat slide switch circuit malfunction | Signal error |
| B1845 | Power seat recline switch circuit malfunction | Signal error |
| B1846 | Power seat front up-down switch circuit malfunction | Signal error |
| B1847 | Power seat rear up-down switch circuit malfunction | Signal error |
| U1280 | Power seat control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Power seat control unit lost communication with MICU (MICU frame) | Loss of communication |
| U128D | Power seat control unit lost communication with gauge control module (VSP/NE frame) | Loss of communication |
Immobilizer-Keyless Control Unit
DTC TROUBLESHOOTING CHART - IMMOBILIZER-KEYLESS CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| U0199 | Immobilizer-keyless control unit lost communication with door multiplex control unit | Loss of communication |
| U1280 | Immobilizer-keyless control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Immobilizer-keyless control unit lost communication with MICU | Loss of communication |
| U128D | Immobilizer-keyless control unit lost communication with gauge control module | Loss of communication |
Left Power Sliding Door Control Unit
DTC TROUBLESHOOTING CHART - LEFT POWER SLIDING DOOR CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B2002 | Left power sliding door control unit internal error (EEPROM error) | Internal error |
| B2025 | Left power sliding door switch (open side) signal error | Signal error |
| B2026 | Left power sliding door switch (close side) signal error | Signal error |
| B2027 | Left power sliding door remote control switch 1 signal error | Signal error |
| B2028 | Left power sliding door remote control switch 2 signal error | Signal error |
| B2029 | Left power sliding door remote control switch 3 signal error | Signal error |
| B2030 | Left power sliding door touch/pinch sensor signal error | Signal error |
| B2031 | Left power slide motor pulse (SLSE1) signal error | Signal error |
| B2032 | Left power slide motor pulse (SLSE2) signal error | Signal error |
| B2033 | Left power slide motor circuit malfunction | Signal error |
| B2034 | Left power slide motor electromagnetic clutch circuit malfunction | Signal error |
| B2035 | Left power sliding door half latch switch circuit short | Signal error |
| B2036 | Left power sliding door full latch switch circuit short | Signal error |
| B2037 | Left power sliding door ratchet switch circuit open | Signal error |
| B2038 | Left power sliding door base position switch circuit open/short | Signal error |
| B2039 | Left power sliding door switch open/close signal input error (input at the same time) | Signal error |
| B2040 | Left power slide motor malfunction | Signal error |
| B2041 | Left power slide motor pulse (SLSE1/SLSE2) error | Signal error |
| B2044 | Left B-pillar open switch signal input error | Signal error |
| B2045 | Left B-pillar close switch signal input error | Signal error |
| B2046 | Left B-pillar switch signal simultaneous ON error | Signal error |
| B2047 | Left child lock switch signal input error | Signal error |
| U1280 | Left power sliding door control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Left power sliding door control unit lost communication with MICU | Loss of communication |
| U128D | Left power sliding door control unit lost communication with gauge control module | Loss of communication |
| U1292 | Left power sliding door control unit lost communication with rear MICU | Loss of communication |
Right Power Sliding Door Control Unit
DTC TROUBLESHOOTING CHART - RIGHT POWER DOOR CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B2052 | Right power sliding door control unit internal error (EEPROM error) | Internal error |
| B2075 | Right power sliding door switch (open side) signal error | Signal error |
| B2076 | Right power sliding door switch (close side) signal error | Signal error |
| B2077 | Right power sliding door remote control switch 1 signal error | Signal error |
| B2078 | Right power sliding door remote control switch 2 signal error | Signal error |
| B2079 | Right power sliding door remote control switch 3 signal error | Signal error |
| B2080 | Right power sliding door touch/pinch sensor signal error | Signal error |
| B2081 | Right power slide motor pulse (SLSE1) signal error | Signal error |
| B2082 | Right power slide motor pulse (SLSE2) signal error | Signal error |
| B2083 | Right power slide motor circuit malfunction | Signal error |
| B2084 | Right power slide motor electromagnetic clutch circuit malfunction | Signal error |
| B2085 | Right power sliding door half latch switch circuit short | Signal error |
| B2086 | Right power sliding door full latch switch circuit short | Signal error |
| B2087 | Right power sliding door ratchet switch circuit open | Signal error |
| B2088 | Right power sliding door base position switch circuit open/short | Signal error |
| B2089 | Right power sliding door switch open/close signal input error (input at the same time) | Signal error |
| B2090 | Right power slide motor malfunction | Signal error |
| B2091 | Right power slide motor pulse (SLSE1/SLSE2) error | Signal error |
| B2094 | Right B-pillar open switch signal input error | Signal error |
| B2095 | Right B-pillar close switch signal input error | Signal error |
| B2096 | Right B-pillar switch signal simultaneous ON error | Signal error |
| B2097 | Right child lock switch signal input error | Signal error |
| U1280 | Right power sliding door control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Right power sliding door control unit lost communication with MICU | Loss of communication |
| U128D | Right power sliding door control unit lost communication with gauge control module | Loss of communication |
| U1293 | Right power sliding door control unit lost communication with left power sliding door control unit (PSDBUZZ/PSDL frame) | Loss of communication |
Power Tailgate Control Unit
DTC TROUBLESHOOTING CHART - POWER TAIL GATE CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1352 | Power tailgate control unit internal error (EEPROM error) | Internal error |
| B1375 | Driver's side PTG switch circuit malfunction | Signal error |
| B1376 | Tailgate outer handle switch circuit malfunction | Signal error |
| B1377 | Power tailgate inside switch circuit malfunction | Signal error |
| B1378 | Power tailgate right touch/pinch sensor circuit malfunction | Signal error |
| B1379 | Power tailgate left touch/pinch sensor circuit malfunction | Signal error |
| B1380 | Tailgate closer unit neutral switch circuit malfunction | Signal error |
| B1381 | Tailgate closer unit release switch circuit malfunction | Signal error |
| B1382 | Tailgate closer unit full latch switch circuit malfunction | Signal error |
| B1383 | Tailgate closer unit ratchet switch circuit malfunction | Signal error |
| B1384 | Tailgate closer unit half latch switch circuit malfunction | Signal error |
| B1386 | Power tailgate sensor pulse A circuit malfunction | Signal error |
| B1387 | Power tailgate sensor pulse B circuit malfunction | Signal error |
| B1388 | Power tailgate drive motor circuit malfunction | Signal error |
| B1389 | Power tailgate motor clutch circuit malfunction | Signal error |
| B1390 | Power tailgate closer motor function error | Signal error |
| U0155 | Power tailgate control unit lost communication with gauge control module (VSP/NE, AT frame) | Loss of communication |
| U0199 | Power tailgate control unit lost communication with P/W (DRLOCK SW, KLDRLOCK frame) | Loss of communication |
| U1280 | Power tailgate control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Power tailgate control unit lost communication with MICU (MICU frame) | Loss of communication |
| U1283 | Power tailgate control unit lost communication with rear MICU (RALOCK SW frame) | Loss of communication |
Parking and Back-Up Sensor Control Unit
DTC TROUBLESHOOTING CHART - POWER AND BACK-UP SENSOR CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B2601 | Parking sensor CPU error | Internal error |
| B2602 | Parking sensor EEPROM error | Internal error |
| B2625 | Left front sensor failure | Signal error |
| B2628 | Right front sensor failure | Signal error |
| B2629 | Left rear sensor failure | Signal error |
| B2630 | Center left rear sensor failure | Signal error |
| B2631 | Center right rear sensor failure | Signal error |
| B2632 | Right rear sensor failure | Signal error |
| B2633 | Front bus failure | Signal error |
| B2634 | Rear bus failure | Signal error |
| B2635 | IND erroneous lighting | Signal error |
| B2636 | Vehicle status combination error | Signal error |
| U0155 | Parking and back-up sensor control unit lost communication with gauge control module | Loss of communication |
| U1280 | Parking and back-up sensor control unit communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Parking and back-up sensor control unit lost communication with MICU | Loss of communication |
BSI Control Unit
DTC TROUBLESHOOTING CHART - BSI CONTROL UNIT
| DTC | Detection | DTC Type |
|---|---|---|
| B18A1 | BSI control unit internal circuit error | Internal error |
| B18A5 | Left BSI radar unit temperature high | Signal error |
| B18A6 | Right BSI radar unit temperature high | Signal error |
| B18A7 | Left BSI radar unit voltage input low | Signal error |
| B18A8 | Right BSI radar unit voltage input low | Signal error |
| B18A9 | Left BSI radar unit voltage input high | Signal error |
| B18AA | Right BSI radar unit voltage input high | Signal error |
| B18AF | Left BSI radar unit internal circuit error | Internal error |
| B18B1 | Right BSI radar unit internal circuit error | Internal error |
| B18B4 | Left BSI radar unit dirty | Signal error |
| B18B5 | Right BSI radar unit dirty | Signal error |
| B18B6 | Lost communication with left BSI radar unit | Loss of communication |
| B18B7 | Lost communication with right BSI radar unit | Loss of communication |
| B18B8 | Left BSI radar unit azimuth off alignment | Signal error |
| B18B9 | Right BSI radar unit azimuth off alignment | Signal error |
| B18BA | Left BSI radar unit version incorrect | Signal error |
| B18BB | Right BSI radar unit version incorrect | Signal error |
| B18BC | BSI radar units communication error | Signal error |
| B18BD | BSI control unit voltage input high | Signal error |
| B18BE | BSI control unit voltage input low | Signal error |
| B18C2 | Left BSI alert indicator output error | Signal error |
| B18CF | Right BSI alert indicator output error | Signal error |
| U0155 | Lost communication with the gauge control module | Loss of communication |
| U0423 | Invalid data received from PCM (vehicle speed data) | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |