PACCAR MX (2004 Emissions) Fault Code: P2239 Lambda – Current Too High on ECU (D420) Pin (C45)

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  PACCAR PX-9 CM2350 (2013-17) Fault Code:1939 PID:SID 212 SPN:3597 FMI:3 ECU Power Output Supply Voltage 1 – Voltage Above Normal or Shorted to High Source

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  PACCAR PX-9 CM2350 (2013-17) Fault Code:1923 PID:SID 334 SPN:3482 FMI:3 Aftertreatment Fuel Shutoff Valve Circuit – Voltage Above Normal or Shorted to High Source

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  PACCAR PX-9 CM2350 (2013-17) Fault Code1927 PID:SID 332 SPN:3480 FMI:3 Aftertreatment Fuel Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source

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