Paccar

PACCAR MX (2004 Emissions) Fault Code: P1565 Idle Speed – Differs From the Target Idle Speed SET CONDITIONS:The PCI ECU (D420) detects that the measured idle speed:1. Differs on average more than 70 rpm for more than 5 seconds from the expected idle speed, four times consecutively or2. Is above 975 rpm for more than 22 seconds or3. Is below 325 rpm for more than 22 seconds DIAGNOSTIC CONDITION:The diagnostic runs when the engine operating state is Idle. RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. POSSIBLE CAUSES:1. PTO controls incorrectly using TSC1 messaging2. Heavy...

PACCAR MX (2004 Emissions) Fault Code: P1566 Idle Speed Control – Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the actual fuel quantity during idling:1. Differs on average more than 40 mg/stroke for more than 5 seconds from the requested fuel quantity, four times consecutively or2. Is above 75 mg/stroke for more than 24 seconds or3. Is below 8 mg/stroke for more than 24 seconds DIAGNOSTIC CONDITION:The diagnostic runs when the engine operating state is Idle. RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. POSSIBLE CAUSES:1. Heavy load on engine during idling2. fuel system failure3....

PACCAR MX (2004 Emissions) Fault Code: P156E Vehicle Speed Sensor – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (B12) 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 come back?– No, repair...

PACCAR MX (2004 Emissions) Fault Code: P156F Vehicle Speed Sensor – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (B12) 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 come back?– No, repair...

PACCAR MX (2004 Emissions) Fault Code: P1570 Engine Oil Temperature – Data Erratic, Intermittent or Incorrect, During Engine Warm-Up SET CONDITIONS:The PCI ECU (D420) detects that the measured oil temperature differs too much from the expected oil temperature at the moment the coolant temperature reaches 74?C [165?F]. DIAGNOSTIC CONDITION:This diagnostic runs 60 seconds after an engine start, and when the coolant temperature is more than 40?C [104?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...