PACCAR MX (2004 Emissions) Fault Code: U1112 CAN – Message (SCR1) Time-Out from Aftertreatment System
PACCAR MX (2004 Emissions) Fault Code: U1112 CAN – Message (SCR1) Time-Out from Aftertreatment System
SET CONDITIONS:
This DTC is set when the repetition rate of the received CAN message is lower than expected or when the message is not received at all.
DIAGNOSTIC CONDITION:
The diagnostic runs continuously when the ignition is keyed on or when the engine is running.
CORRESPONDING OBD READINESS MONITOR:
None
RESET CONDITION:
The DTC changes to inactive after the diagnostic runs and passes.
REPAIR VERIFICATION:
1. Clear all DTCs.
2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.
3. Did the DTC come back?
– No, repair successful
– Yes, repair unsuccessful
POSSIBLE CAUSES:
1. Wiring issues (interruption or contact resistance)
2. Defective components
3. Incorrect software configuration
![DOOSAN DMS-5 3.1.3 [2023.11] diagnostic software](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2023/11/1.png?resize=300%2C300&ssl=1)
