Kubota 07-CR-E5 - Low Coolant Temperature in Parked Regeneration (DTC P3012; 523589-17)

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S302
(62) Low Coolant Temperature in Parked Regeneration (DTC P3012 /
523589-17)
Behaviour during malfunction:
• None
Detection item:
• During regeneration mode, engine warm-up condition is not satisfied (coolant temperature is low)
DTC set preconditions:
• During parked active regeneration mode
DTC set parameter:
• Engine coolant temperature stays below 50 °C (122 °F) for 1500 seconds or more under parked regeneration
process
Engine warning light:
•ON
Limp home action by engine ECU (system action):
• None
Recovery from error:
• Diagnostic counter = zero or Key switch turn OFF (Leaving from parked active regeneration status)
9Y3200007CRS0473US0
1. Check the Coolant Temperature
1. Perform the DPF Manual Regeneration again after warming up
the engine.
2. Monitor the coolant temperature in the no-load maximum speed
status with the diagnosis tool.
9Y3200007CRS0474US0
2. Check the Thermostat
1. Check the thermostat.
9Y3200007CRS0475US0
3. Check the Coolant Temperature Sensor (Refer to items
P0117 and P118)
1. Check the coolant temperature sensor.
9Y3200007CRS0476US0
Service
specification
The coolant temperature should be 50 °C (122 °F) or more
within 10 minutes.
OK Normal.
NG Go to "2. Check the Thermostat".
(a) CAN1 Connector
OK Go to "3. Check the Coolant Temperature Sensor (Refer to items P0117
and P118)"
NG Replace the thermostat.
(1) Thermostat Cover
(2) Thermostat Cover Gasket
(3) Thermostat Assembly
OK Normal.
NG Replace the coolant temperature sensor or engine coolant system.
(Follow the diagnostic procedure of items P0117 and P118)
(1) Coolant Temperature Sensor
KiSC issued 03, 2022 A