Kubota 07-CR-E5 - Battery Voltage too Low (DTC P1 C04; 168-1) [Engine ECU (Kubota) Dedicated DTC]

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S244
(39) Battery Voltage Too Low (DTC P1C04 / 168-1) [Engine ECU (Kubota)
Dedicated DTC]
P1C04 / 168-1: Battery voltage too low
Behaviour during malfunction:
• Engine stops
Detection item:
• Open circuit, short circuit or damage of harness
• Failure of battery
DTC set preconditions:
• Key switch is ON
• Starter switch signal (Engine ECU: V12 terminal) is not activated
DTC set parameter:
• Engine ECU recognition of battery voltage is below 6 V in 12 V system
• Not monitored during cranking
Engine warning light:
•ON
Limp home action by engine ECU (system action):
• Engine stop
Recovery from error:
• Key switch turn OFF
9Y3200007CRS0570US0
1. Check the Engine ECU Data
1. Place the key switch in the OFF position, attach the diagnosis
tool to the CAN1 connector, and return the key switch to the ON
position again. Then, check the "Battery voltage" status on the
data monitor.
2. Change the engine operation status, and check the "Battery
voltage".
NOTE
• Try to change the engine speed as the generated voltage
changes accordingly.
9Y3200007CRS0571US0
Service
specification
6 V or higher, 15 V or lower
(except intense cold temperature)
OK Clear the DTC and check whether it is output again or not.
OK Normal.
NG Replace the engine ECU.
NG Go to "2. Check the engine ECU Terminal Voltage (Part 1)".
(a) CAN1 Connector
KiSC issued 03, 2022 A