CAN COMMUNICATION-RELATED DIAGNOSIS CODE (U CODE) TABLE


Code No.
Diagnostic item
Output ECU
Action
U1073
Bus Off
Engine-ECU <M/T> or Engine-A/T-ECU <A/T>, ASTC-ECU, Combination meter, SRS-ECU, Immobilizer-ECU <Diesel powered vehicle>, Centre display
CAN main bus line diagnostics
U1100*1
Engine-ECU <M/T> or Engine-A/T-ECU <A/T> time-out (related to engine)
Combination meter <3000, 3200 and 3800>, Centre display
U1101*2
Engine-A/T-ECU time-out (related to automatic transmission) <A/T>
Engine-A/T-ECU <3200>, Combination meter
U1102
ABS-ECU or ASTC-ECU time-out
Engine-ECU <M/T> or Engine-A/T-ECU <A/T>, Combination meter
U1108
Combination meter time-out
Engine-ECU <M/T> or Engine-A/T-ECU <A/T>, Centre display
U1109
ETACS-ECU time-out
Engine-ECU <3200-M/T> or Engine-A/T-ECU <3200-A/T>, Combination meter, Centre display
U1110
A/C-ECU time-out
Engine-ECU <M/T> or Engine-A/T-ECU <A/T>
U1112
SRS-ECU time-out
Combination meter
U1117
Immobilizer malfunction
Engine-A/T-ECU <vehicles for Hong Kong and Australia>
U1120
Failure information on engine-ECU <M/T> or Engine-A/T-ECU <A/T> (related to engine)
Combination meter, Centre display
Diagnose CAN main bus lines and confirm input signals.
U1128
Failure information on combination meter
Centre display
U1206
Flag invalid
Combination meter
10
Bus Off
ETACS-ECU
CAN main bus line diagnosis
11
Engine-ECU <M/T> or Engine-A/T-ECU <A/T> time-out (related to engine)
12
Engine-A/T-ECU time-out or not equipped (related to transmission) <A/T>
13
A/C-ECU time-out
14
Combination meter time-out
15
Centre display unit time-out or not equipped
21
Failure information on engine-A/T-ECU (related to meter)
Diagnose CAN main bus lines and confirm input signals.
note
  • *1: For 2800-vehicles, diagnosis code No. U1100 does not mean that there is a problem.
  • *2: For M/T-vehicles, diagnosis code No. U1101 does not mean that there is a problem.