7-82 BA 35203_04 * 3.0 * 35203_04_07_Wartung.fm
7 Maintenance
Monitoring the SCR catalytic converter: system error
System errors may be errors of individual SCR components, such as the
implausible value of a NOx or temperature sensor.
➥ The diesel engine performance is reduced in the event of an
impairment of the urea injection due to a system error.
Symbol
in field G
System error
message
Result
• No symbol appears in the field G of
the digital display.
• Warning light66
does not light up.
• No acoustic signal.
Normal operating
conditions
• The exhaust
after-treatment is in the
permissible range.
• Symbol G/4 appears
continuously.
• Warning light 66
flashes.
• An acoustic signal
sounds.
• Machine operation can be
continued.
➥ Seek an authorized
service center as soon as
possible.
• Symbol G/4 appears
continuously.
• Warning light 66
flashes.
• An acoustic signal
sounds.
Caution! Critical condition
• Diesel engine goes into
protective functions and
performance is reduced
by 30%.
• The speed of the diesel
engine is limited.
(1200 rpm).
➥ Contact an authorized
service centre.
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