Page 716 - Workshop Manual - Tunland (2017)

04-30 DIAGNOSTICS - ENGINE CONTROL SYSTEM

04
Failure code Diagnostic items (DTC definition) Trouble location
• Oil rail pressure sensor
• Fuel pump actuator
Fuel injector metering oil rail 1 pres- • Oil rail pressure sensor or fuel
sure- data is valid but above normal
P1911 pump actuator connector is out of
operating range - highest severity
contact, the harness is open or
level
shorted
• ECM

• Postprocessing diesel particulate
Postprocessing diesel particulate fil- filter
ter differential pressure - data is valid
P1921 • Differential pressure sensor and its
but above normal operating range - harness
medium severity level
• ECM

• Postprocessing diesel particulate
filter
Postprocessing diesel particulate fil-
• Differential pressure sensor and its
ter differential pressure - data is valid
P1922 harness
but above normal operating range - • Postprocessing temperature sensor
highest severity level
and its harness
• ECM

• Battery
ECU power output voltage 1 - data
• Turbocharger actuator and its har-
P1938 is valid but below normal operating
ness
range - medium severity level
• ECM

ECU power output voltage 1 - voltage • Turbocharger actuator and its har-
P1939 is above normal or shorted to low ness
voltage power supply • ECM

• Intake mass flow sensor and its
EECU power output voltage 1 - volt- harness
P1941 age is below normal or shorted to low • Turbocharger actuator and its har-
voltage power supply ness
• ECM

Ambient air density - data is valid but • Atmospheric pressure sensor and
P1943 above normal operating range - low- its harness
est severity level • ECM

VGT actuator drive temperature is
• Variable geometry turbocharger
too high (calculated value) - data is
P1962 actuator
valid but above normal operating • ECM
range - lowest severity level

• Postprocessing DPF differential
Postprocessing diesel particulate fil-
P1993 pressure sensor
ter (DPF) missing - Condition exists
• Postprocessing DPF