419 – SD T-Coolant b.Engine
ZKP-Number: 18.004.604
Cause
Corrective action
Coolant inlet temperature
sensor faulty. Short circuit or
wire break
u
Check sensor and wiring (B3), replace as necessary.
420 – AL L1 Aux 1
ZKP-Number: 2.0160.921
Limit value 1
Cause
Corrective action
Input signal of Aux 1 has
exceeded/not attained limit
value 1, depending on
configuration.
u
Determine cause of limit value violation and rectify fault.
421 – AL L2 Aux 1
ZKP-Number: 2.0160.922
Limit value 2
Cause
Corrective action
Input signal of Aux 1 has
exceeded/not attained limit
value 2, depending on
configuration.
u
Determine cause of limit value violation and rectify fault.
428 – AL L1 T-Aux 1
ZKP-Number: 2.0130.921
Limit value 1
Cause
Corrective action
Temperature signal of Aux 1 has
exceeded / not attained limit
value 1, depending on
configuration.
u
Determine cause of limit value violation and rectify fault.
434 – AL L2 P-Aux 1
ZKP-Number: 2.0173.931
Limit value 1
Cause
Corrective action
Coolant temperature too high.
u
Check coolant circuit.
MS150069/02E 2014-03
| Troubleshooting | 145
TIM-ID: 0000045495 - 001
