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PACCAR MX (2004 Emissions) Fault Code: P0523 Engine Oil Pressure - Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C84)

PACCAR MX (2004 Emissions) Fault Code: P0524 Engine Oil Pressure - Data Valid but Too Low, Most Severe

PACCAR MX (2004 Emissions) Fault Code: P0527 Fan Speed - Data Valid but Too High

PACCAR MX (2004 Emissions) Fault Code: P0541 Grid Heater - Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C72) or Pin (C49)

PACCAR MX (2004 Emissions) Fault Code: P0528 Fan Speed - Data Valid but Too Low

PACCAR MX (2004 Emissions) Fault Code: P0542 Grid Heater - Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C72) or Pin (C49)

PACCAR MX (2004 Emissions) Fault Code: P0543 Grid Heater - Current Too Low or Open Circuit on ECU (D420) Pin (C72) or Pin (C49)

PACCAR MX (2004 Emissions) Fault Code: P0562 PCI ECU Power Supply - Data Valid but Too Low on ECU (D420) Pin (B60) or Pin (B61) or Pin (B62)

PACCAR MX (2004 Emissions) Fault Code: P0567 CAN Communication - Message (CCVS) Out of Range, Cruise Control Resume Switch From Vehicle Control System

PACCAR MX (2004 Emissions) Fault Code: P0563 PCI ECU Power Supply - Data Valid but Too High on ECU (D420) Pin (B60) or Pin (B61) or Pin (B62)