PACCAR MX (2004 Emissions) Fault Code: U1900 CAN - Message (DPFC2) 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.

RESET CONDITION:
The DTC changes to inactive after the diagnostic runs and passes.

POSSIBLE CAUSES:
1. Wiring issues (interruption or contact resistance)
2. Defective components
3. Incorrect software configuration

PACCAR MX (2004 Emissions) Fault Code: U1899 CAN Communication - Message (AT1IG1) Out of Range, O2 Concentration Before Catalyst Reading Stable from NOx Sensor before Catalyst

PACCAR MX (2004 Emissions) Fault Code: U1898 CAN Communication - Message (AT1IG1) Out of Range, O2 Concentration Before Catalyst from NOx Sensor before Catalyst

PACCAR MX (2004 Emissions) Fault Code: U1897 CAN Communication - Message (PROPB_SCD_1) Not Available, Predictive Cruise Control Downhill Speed Control Override Request from Predictive Cruise Control

PACCAR MX (2004 Emissions) Fault Code: U1896 CAN Communication - Message (PROPB_SCD_1) Out of Range, Predictive Cruise Control Downhill Speed Control Override Request from Predictive Cruise Control

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