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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2784
Experience:  ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
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I got a Mack with code 5246 operator inducement severity Eco

Customer Question

I got a Mack with code 5246 operator inducement severity Eco code antsy help
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Customer: replied 1 year ago.
it is a 2012 v-Mac IV and its Ecm not Eco also the debate timer has started should I try a forced regen.
Expert:  Jeremy replied 1 year ago.

My name is ***** ***** I will assist you.

Do a forced regen on the truck if there are no other codes. If there are other codes, then they need to be corrected first. If this is the only code, do a forced regen and monitor the flame temp sensors. Verify that they are getting high enough. MP7 engines should be floating around 2,000 degrees on the inlet/pre-filter side and 1600 degrees on the outlet side. If the temps are lower, there is another fault in the regen system.

Usually when I see this code, a forced regen will resolve the issue. If it doesn't, the air valve that feeds the atomizer module is usually bad. It isn't sending enough air to give a good fuel/air mixture for the regen to perform properly.

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Jeremy

Expert:  Jeremy replied 1 year ago.

Do you still need assistance with this?

Expert:  Jeremy replied 1 year ago.

Did you need anymore assistance with this? I'm following up since the question is still showing as open/unresolved. Thanks.