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Check engine light on/code ecu=128 displayed

mercedes mbe-4000/check eng. light on,code ecu-128

displayed.Runs fine,all gauges reading correct parameters,no power loss,no smoke.can anybody tell me what this code is?

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3 Answers

15.1 ELECTRONIC ENGINE CONTROL SYSTEM

When the electronic engine control system detects a fault, it broadcasts a message on the datalink. The dash display will show the code "ECU 128," indicating there is an engine fault.

NOTE:

To read the complete fault code, refer to the MBE Electronic Controls Troubleshooting Guide (6SE422) or bring the vehicle to an authorized repair facility. Complete fault codes can be read using minidiag2.

Basically they are saying that the problem may be with the actual computer it's self. Most other codes would refer to items attached to the engine but not internal to the computer.

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what the fault code 128s054 03 on a 2007 freightliner. merz eng.

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Here it is, Detroit service bulletin.

https://ddcsn-ddc.freightliner.com/cps/r...

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redjac will be eternally grateful.

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