LGMG North America Inc. Maintenance Manual
14
1.18 Engine Fault Table
Faults
Cause
Measures
Engine does not start or is
difficult to start
Not disconnected (if possible)
Check coupling
Fuel tank empty
Tanks
Fuel suction pipe blocked
Check
Below starting limit temperature
Check
Cold starting device
Check/replace
Wrong SAE viscosity class of the
engine lubricating oil
Change the lubricating oil
Fuel quality does not comply
with operating manual
Change the fuel
Battery defective or discharged
Check battery
Cable connection to starter loose
or oxidized
Check cable connections
Starter defective or pinion does
not engage
Check starter
Air filter clogged / turbocharger
defective
Check/replace
Air in fuel system
Vent fuel system
Compression pressure too low
Check compression pressure
Exhaust gas backpressure too
high
Check
Injection line leaks
Check injection line
High-pressure pump defective
Check/replace
Engine does not start and
diagnostic lamp flashes
Engine
electronics
prevents
starting
Check error according to error
code and eliminate error if
necessary
Engine starts, but runs irregularly
or fails
Exhaust gas backpressure too
high
Check
Compression pressure too low
Check compression pressure
Cold starting device
Check/replace
Air in fuel system
Vent
Fuel filter contaminated
Clean
Fuel quality does not comply
with operating manual
Change the fuel
Injector defective
Change
Injection line leaks
Check injection line
Engine cable harness defective
Check/replace
Speed changes are possible and
diagnostic lamp lights up
Engine electronics has detected
a system error and activates an
equivalent speed
Check error according to error
code and eliminate error if
necessary
Engine becomes excessively
hot.
Temperature warning system
activates
Vent line blocked
Clean
Lube oil cooler defective
Check/replace
Lube oil filter contaminated on
the air or lube oil side
Change
Lube oil level too high
Check lube oil level, if necessary
drain off.
Lubricating oil level too low
Fill up lube oil
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