Paccar

PACCAR MX (2004 Emissions) Fault Code: P3440 MX Engine Brake Solenoid Valve Cylinder 5 – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (A13) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the signal or control circuit of the ECU. 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...

PACCAR MX (2004 Emissions) Fault Code: P3445 MX Engine Brake Solenoid Valve Cylinder 4-6 – Current Too Low or Open Circuit on ECU (D420) Pin (A20) SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects a too low current on the control circuit for engine brake activation. DIAGNOSTIC CONDITION:This diagnostic runs during activation of the engine brake. 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,...

PACCAR MX (2004 Emissions) Fault Code: P3447 MX Engine Brake Solenoid Valve Cylinder 4-6 – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A20) SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on the signal or control circuit of the ECU. 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...

PACCAR MX (2004 Emissions) Fault Code: P3448 MX Engine Brake Solenoid Valve Cylinder 4-6 – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (A20) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the signal or control circuit of the ECU. 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...

PACCAR MX (2004 Emissions) Fault Code: U0011 CAN – Hardware or Software Malfunction on V-CAN2 SET CONDITIONS:The PCI ECU detects a malfunction on the V-CAN2 network. DIAGNOSTIC CONDITION:This diagnostic runs once when the ignition is keyed on. RESET CONDITION:This DTC changes to inactive after the ignition is keyed off for at least 15 seconds and keyed on again, and the fault is no longer detected. POSSIBLE CAUSES:No or intermittent CAN communication on the V-CAN2 network caused by:1. Wiring issues2. Malfunction of an ECU connected VCAN2 ADDITIONAL INFORMATION:The V-CAN2 provides the CAN communication between the PCI ECU (D420) and:1. Tachograph [B525]2....