PACCAR MX (2004 Emissions) Fault Code: P2603 Coolant Pump Speed – Data Valid but Too High SET CONDITIONS:The PCI ECU...

PACCAR MX (2004 Emissions) Fault Code: P2604 Coolant Pump – Voltage Too High or Short Circuit to Supply on ECU...

PACCAR MX (2004 Emissions) Fault Code: P2605 Coolant Pump – Voltage Too Low or Short Circuit to Ground on ECU...

PACCAR MX (2004 Emissions) Fault Code: P2609 Grid Heater Relay – Current Too Low or Open Circuit on ECU (D420)...

PACCAR MX (2004 Emissions) Fault Code: P262B PCI ECU Power Supply – Open Circuit on ECU (D420) Pin (B43) DIAGNOSTIC...

PACCAR MX (2004 Emissions) Fault Code: P268A Fuel Injection Control – Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the...