PACCAR Engine Aftertreatment Systems-Operator's Manual
PACCAR Engine Aftertreatment Systems-Operator's Manual
PACCAR Engine Aftertreatment Systems-Operator's Manual
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Selective Catalytic Reduction (SCR) System<br />
SCR Component Failure<br />
Warning<br />
Level<br />
Warnings Indicators Condition Effect on <strong>Engine</strong><br />
0 None<br />
No<br />
Issue<br />
None<br />
3<br />
1 DEF Warning Lamp<br />
on<br />
(MX engine only)<br />
Check <strong>Engine</strong> Lamp<br />
on<br />
Malfunction Indicator<br />
Lamp (MIL) on<br />
(May not apply to all<br />
engines)<br />
Failure<br />
Detected<br />
None<br />
2 DEF Warning Lamp<br />
flashing<br />
(MX engine only)<br />
Check <strong>Engine</strong> Lamp<br />
on<br />
MIL<br />
on<br />
(May not apply to all<br />
engines)<br />
Detected<br />
+ 1 hour<br />
<strong>Engine</strong> power<br />
derated<br />
3 DEF Warning Lamp<br />
flashing<br />
(MX engine only)<br />
Check <strong>Engine</strong> Lamp<br />
on<br />
MIL<br />
on<br />
(May not apply to all<br />
engines)<br />
Stop <strong>Engine</strong> Lamp<br />
may be on<br />
Detected<br />
+ 5 hours<br />
<strong>Engine</strong> power<br />
derated and/or<br />
vehicle speed<br />
significantly<br />
limited<br />
3-20
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