Paccar

PACCAR MX (2004 Emissions) Fault Code: P1571 Engine Oil Temperature – Data Erratic, Intermittent, or Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the measured oil temperature differs too much from the expected oil temperature for more than 300 seconds. DIAGNOSTIC CONDITION:This diagnostic runs 60 seconds after an engine start, and when the coolant temperature is more than 65?C [149?F]. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive when 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...

PACCAR MX (2004 Emissions) Fault Code: P1572 Inlet Air Temperature After Compressor – Data Erratic, Intermittent, or Incorrect SET CONDITIONS:The PCI ECU (D420) calculates that the inlet air temperature after turbo compressor differs too much from the expected value. DIAGNOSTIC CONDITION:This diagnostic runs:1. 180 seconds after the ignition has been keyed on2. When the engine speed is above 1050 rpm3. When the engine is running at a moderate and steady load CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to...

PACCAR MX (2004 Emissions) Fault Code: P1573 Inlet Air Temperature in Inlet Manifold – Data Valid but Too High SET CONDITIONS:The PCI ECU (D420) detects that the boost temperature is more than 127?C [261?F] for more than 120 seconds. DIAGNOSTIC CONDITION:The diagnostic runs 180 seconds after the engine is started. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive when 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? (Can be pending, inactive or active)– No, repair successful–...

PACCAR MX (2004 Emissions) Fault Code: P1574 Exhaust Gas Pressure Before Turbine – Data Erratic, Intermittent or Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the measured pressure before turbine is above 6.0 bar [87 psi] during an engine braking event. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. POSSIBLE CAUSES:1. Malfunction of the VTG turbocharger control, BPV valve control, or EGR valve control. Check for relevant DTCs.2. Pressure sensor before turbine deviation ADDITIONAL INFORMATION:1. An automated transmission can request a shift assist event on...

PACCAR MX (2004 Emissions) Fault Code: P1580 Turbo Speed – Data Valid but Too High SET CONDITIONS:The PCI ECU (D420) detects that the turbo speed is above 140,000 rpm for more than 20 seconds. DIAGNOSTIC CONDITION:This diagnostic runs:1. When engine speed is below 1900 rpm and2. The engine is moderately loaded and3. The VTG turbocharger position is greater than 10% CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive when 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...