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PACCAR MX (2004 Emissions) Fault Code: P0568 CAN Communication - Message (CCVS) Out of Range, Cruise Control Set Switch from Vehicle Control System

PACCAR MX (2004 Emissions) Fault Code: P0571 CAN Communication - Message (CCVS) Out of Range, Brake Switch from Vehicle Control System

PACCAR MX (2004 Emissions) Fault Code: P0640 Grid Heater Relay - Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C55)

PACCAR MX (2004 Emissions) Fault Code: P0650 Malfunction Indicator Lamp (MIl) - Current Too Low or Open Circuit on ECU (D420) Pin (B23)

PACCAR MX (2004 Emissions) Fault Code: P0668 Internal ECU Temperature - Internal Error

PACCAR MX (2004 Emissions) Fault Code: P0666 Internal ECU Temperature - Data Erratic, Intermittent or Incorrect, at Ignition On

PACCAR MX (2004 Emissions) Fault Code: P0669 Internal ECU Temperature - Internal Error

PACCAR MX (2004 Emissions) Fault Code: P0685 PCI ECU - Short Circuit to Ground on ECU (D420) Pin (B3)

PACCAR MX (2004 Emissions) Fault Code: P0691 Electronically Controlled Fan - Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C74)

PACCAR MX (2004 Emissions) Fault Code: P0698 PCI ECU 5V Sensor Supply - Voltage Too Low or Short Circuit to Ground