Diesel Oxidation Catalyst (Doc) - Melted - Navistar MaxxForce DT Diagnostic Manual

DIAGNOSTIC MANUAL

16.1.11. Diesel Oxidation Catalyst (DOC) - Melted

Appearance
Cause
Action
170
Figure 56 Diesel Oxidation Catalyst (DOC) - Melted.
Melted or deformed DOC cells.
Excessive exhaust gas temperatures.
Determine the cause of excessive exhaust gas temperatures. Refer to the appropriate
Engine Diagnostic Manual for diagnostic procedures. Once the cause of the excessive
exhaust gas temperature has been repaired, replace the DOC.
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