Paccar

PACCAR MX (2004 Emissions) Fault Code: U1780 CAN – Message (TSC1 yye) Time-Out 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–...

PACCAR MX (2004 Emissions) Fault Code: U1781 CAN – Message (TSC_PE) Time-Out 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,...

PACCAR MX (2004 Emissions) Fault Code: U1788 CAN Communication – Message (PROPB_EST) Not Available, Coolant Temperature from Retarder System SET CONDITIONS:This DTC is set when a CAN message is received correctly, but the content (signal value or status) is not available. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. 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:A...

PACCAR MX (2004 Emissions) Fault Code: U1789 CAN Communication – Message (PROBA_BBM_to_Eng) Out of Range, Starter Interrupt from Body Builder Module SET CONDITIONS:This DTC is set when a CAN message is received correctly, but the content (signal value or status) is out of the expected range. 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...

PACCAR MX (2004 Emissions) Fault Code: U178A CAN Communication – Message (PROBA_BBM_to_Eng) Out of Range, ESC Enable from Body Builder Module SET CONDITIONS:This DTC is set when a CAN message is received correctly, but the content (signal value or status) is out of the expected range. 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...