Kubota 07-CR-E5 - Intake Air Temperature Built-In MAF Sensor Abnormality (DTC P0072; 171-4, DTC P0073; 171-3)

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S137
(2) Intake Air Temperature Built-in MAF Sensor Abnormality (DTC P0072 /
171-4, DTC P0073 / 171-3)
P0072 / 172-4: Intake air temperature built-in MAF sensor: Low
Behaviour during malfunction:
•None
Detection item:
• Ground short circuit of sensor / harness
DTC set preconditions:
• Battery voltage is normal
DTC set parameter:
• Intake air temperature built-in MAF sensor voltage: 0.1 V or less
Engine warning light:
•ON
Limp home action by engine ECU (system action):
• 25 °C (77 °F) [default value]
Recovery from error:
• Diagnostic counter = zero or Key switch turn OFF
9Y3200007CRS0172US0
P0073 / 171-3: Intake air temperature built-in MAF sensor: High
Behaviour during malfunction:
•None
Detection item:
• Sensor / Harness short to +B
DTC set preconditions:
• Battery voltage is normal
DTC set parameter:
• Intake air temperature built-in MAF sensor voltage: 4.9 V or more
Engine warning light:
•ON
Limp home action by engine ECU (system action):
• 25 °C (77 °F) [default value]
Recovery from error:
• Diagnostic counter = zero or Key switch turn OFF
9Y3200007CRS0173US0
KiSC issued 03, 2022 A