Paccar

PACCAR MX (2004 Emissions) Fault Code: U1901 CAN – Message (DPFC2) Rate Too High from Aftertreatment System SET CONDITIONS:This DTC is set when the repetition rate of the received CAN message is higher than expected. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. POSSIBLE CAUSES:1. ECU software mismatch2. Defective components PACCAR MX (2004 Emissions) Fault Code: U1900 CAN – Message (DPFC2) Time-Out from Aftertreatment System PACCAR MX (2004 Emissions) Fault Code: U1899 CAN Communication – Message (AT1IG1) Out of Range, O2 Concentration Before Catalyst Reading...