PACCAR MX (2004 Emissions) Fault Code: P1137 Lambda Sensor Heater Power Supply – Incorrect SET CONDITIONS:The PCI ECU (D420) detects...

PACCAR MX (2004 Emissions) Fault Code: P1138 Lambda Sensor Heater – Voltage Too Low or Short Circuit to Ground on...

PACCAR MX (2004 Emissions) Fault Code: P1139 Lambda Sensor Calibration – Malfunction SET CONDITIONS:The PCI ECU (D420) detects that the...

PACCAR MX (2004 Emissions) Fault Code: P113A Lambda Sensor Temperature – Unable to Reach Target SET CONDITIONS:The PCI ECU (D420)...

PACCAR MX (2004 Emissions) Fault Code: P113B Lambda Sensor Controller – Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the...

PACCAR MX (2004 Emissions) Fault Code: P1158 Wheel Speed, Front Axle, Left – Data Erratic, Intermittent or Incorrect SET CONDITIONS:The...