1498 – AL_CommLost_SUDU4
Cause
Corrective action
The ECU can no longer detect
supply unit / dosing unit 4
(M80.2X1, flow 2) of the SCR
system on the CAN bus.
1. Check component(s) and wiring, replace as necessary.
2. Contact Service.
1499 – AL_dosing_unit_defect_DU4
Cause
Corrective action
Supply unit / dosing unit 4
(M80.2X1, flow 2) of the SCR
system has signaled an internal
fault via component CAN bus 5.
u
Contact Service.
1500 – AL_heater_cartridge_defect_SU4
Cause
Corrective action
The heating cartridge power
supply or the heating cartridge in
supply unit M80.2X3 is faulty.
1. Check component(s) and wiring, replace as necessary.
2. Contact Service.
1501 – AL_CommLost_SUDU5
Cause
Corrective action
The ECU can no longer detect
supply unit / dosing unit 5
(M80.1X1, flow 3) of the SCR
system on the CAN bus.
1. Check component(s) and wiring, replace as necessary.
2. Contact Service.
1502 – AL_dosing_unit_defect_DU5
Cause
Corrective action
Supply unit / dosing unit 5
(M80.1X1, flow 3) of the SCR
system has signaled an internal
fault via component CAN bus 4.
u
Contact Service.
1503 – AL_heater_cartridge_defect_SU5
Cause
Corrective action
The heating cartridge power
supply or the heating cartridge in
supply unit M80.1X3 is faulty.
1. Check component(s) and wiring, replace as necessary.
2. Contact Service.
1504 – AL_CommLost_SUDU6
Cause
Corrective action
The ECU can no longer detect
supply unit / dosing unit 6
(M80.2X1, flow 3) of the SCR
system on the CAN bus.
1. Check component(s) and wiring, replace as necessary.
2. Contact Service.
MS15065/01E 2019-01
| Troubleshooting | 173
TIM-ID: 0000078552 - 003
