Paccar

PACCAR MX (2004 Emissions) Fault Code: P1020 BPV Actuator – Internal Error SET CONDITIONS:The BPV valve (L096) detects an internal error. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive after the ignition is keyed off for at least 15 seconds and keyed on again and the error is no longer detected. 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. E-CAN network communication issue.2. Faulty...

PACCAR MX (2004 Emissions) Fault Code: P1021 BPV Actuator – CAN Communication Error SET CONDITIONS:The BPV valve (L096) detects that the cyclic CAN command message transmitted by the PCI ECU (D420) is missing for more than 7.5 seconds. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive as soon as the fault is no longer detected. 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:CAN wiring...

PACCAR MX (2004 Emissions) Fault Code: P1022 BPV Actuator – Internal Error SET CONDITIONS:The BPV valve (L096) detects that the internal actuator current is too high. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive as soon as the fault is no longer detected. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the and diagnostic conditions and set conditions.3. Did the DTC come back?– No, repair successful– Yes, repair unsuccessful POSSIBLE CAUSES:1. High friction or sticking of BPV valve bearings or mechanism2. Blocked BPV...

PACCAR MX (2004 Emissions) Fault Code: P1023 BPV Actuator Temperature – Data Valid but Too High SET CONDITIONS:The BPV valve (L096) detects that the temperature of the actuator is higher than 142?C for more than 30 seconds. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None 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. 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: P1024 BPV Actuator Power Supply – Incorrect SET CONDITIONS:The BPV valve (L096) detects that the actuator power supply is less than 7.5 V or greater than 35 V. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive:1. After the ignition is keyed off for at least 15 seconds and keyed on again and2. When the actuator power supply is between 8.5 V and 34 V REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the diagnostic conditions and set...