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Ecu 128 sid 380 fail 11 is the code I'm getting no lights…

ecu 128 sid 380 fail...
ecu 128 sid 380 fail 11 is the code I'm getting no lights just codes
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Answered in 1 hour by:
3/15/2018
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,713
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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My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow-ups are free after ratings, so rate with confidence!

The code is Catalyst missing. The ECM can't see the exhaust catalyst. The harness is either shorting or a sensor is not reading properly. I don't know which engine you have, but all are the same in that a computer needs to be connected with a "monitored" regen performed to where the technician will watch the regen to see if one or all the sensor are dropping. A lot of times, one of the temperature sensors can be grounding out which drops all the sensors from back feeding or the harness can have a melt in it, which expands from heat as well as moisture from idling all night, then will act up.

It is hard to diagnose without being connected and monitored to see what is going on with that particluar fault.

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Jeremy

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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,713
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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Daniel Wilson
Category: Medium and Heavy Trucks
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Jeremy
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,713
3,713 Satisfied Customers
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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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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