What's the ecu 128 fault code freightliner mercedes engine?

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Nick B. January 20, 2021
On the Mercedes Freightliner Sprinter engine, ECU 128 is not a fault code; it just refers You to the electronic control unit, where Your fault code will lie. The ECU is Your van's black box of electronics, so You've got something going on in there; 128 just points to module 128, but doesn't tell You anything about what's actually wrong. In order to fully diagnose, You'll need to navigate Your onboard display with the +/- buttons. If You're seeing ECU 128, You should be able to get more information about the fault code which is being set. If You're not, You may have to check Your system with a diagnostic tool -- these can often be used free of charge by most major automotive part stores.
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Robin M July 30, 2020
It indicates that the ECU engine has a secret in it. ECU 128 just recognizes the module, it's not a fault address.
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Ravi May 31, 2023
ECU 12_8. MERCEDES Business class m2 truck. Sid64 engine speed sensor #2. Fm18 abnormal frequency pulse width or period.
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Joe Parao March 2, 2023
No clue to the answers
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gearfixup March 17, 2024
ECU 12_8. MERCEDES Business class m2 truck. Sid64 engine speed sensor #2. Fm18 abnormal frequency pulse width or period. Https://gearfixup.com/ecu-128-code-freightliner/
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