Make: PACCAR
Engine: MX (2013 Emissions)
PID: N/A
SPN: N/A
FMI: N/A
Description: Power Supply Battery Voltage Level Warning
Troubleshooting:
Possible causes:
1) Faulty wiring
2) Faulty connection
3) Faulty battery
Possible repairs:
1) Replace the battery
2) Replace the engine harness

Make: PACCAR
Engine: MX (2013 Emissions) P006B
PID: N/A
SPN: N/A
FMI: N/A

Description: BPV Sensor Pressure Is Out Of Range At Time Of Ignition
Troubleshooting:
Diagnostic condition:
This diagnostic runs:
1) when the ignition is keyed on (NO engine start), and
2) ambient temperature is more than -20°C [-4°F]
Set condition of fault code:
The PCI ECU (D420) detects that the measured pressure after BPV differs by more than 0.07
bar [1 psi] from the average of other pressure sensors on the engine for
more than 5 seconds.
Reset condition of fault code:
To validate the repair, key on the ignition (NO engine start) and wait for 10 seconds to allow the
system to power up and the diagnostics to run.
Possible causes:
1) Pressure sensor after BPV deviatio
Possible repairs:
1) Visually inspect all applicable connectors and harnesses for corrosion, damage, and rubbing
2) Replace the pressure senso
3) Replace the PCI
Page

Make: PACCAR
Engine: MX (2013 Emissions) P006C
PID: N/A
SPN: N/A
FMI: N/A

Description: Humidity Sensor Out Of Range At Time of Ignition
Troubleshooting:
Diagnostic condition- This diagnostic runs:
1) when the ignition is keyed on (NO engine start), and
2) ambient temperature is more than -20°C [-4°F]
Set condition of fault code:
The PCI ECU (D420) detects that the measured pressure reading of the humidity sensor differs
by more than 0.06 bar [0.9 psi] from the average of other pressure sensor readings on the
engine for more than 5 seconds.
Reset condition of fault code:
To validate the repair, key on the ignition (NO engine start) and wait for 10 seconds to allow the
system to power up and the diagnostics to run
Possible causes:
1) Humidity sensor deviation
Possible repairs:
1) Visually inspect all applicable connectors and harnesses for corrosion, damage, and rubbing
2) Replace the Pressure sensor
3) Replace the electrical values

Make: PACCAR
Engine: MX (2013 Emissions) P008A
PID: N/A
SPN: N/A
FMI: N/A

Description: Detects if rail pressure is too low to inject demanded pulses