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raphaeleule20

BMAX ECU Fault

I've got a 2015 Ford BMAX with a gasoline engine, about 188000 km on the clock. I'm noticing less engine power, and diagnostics show a possible ECU fault. Could a bad main relay be the problem? Anyone seen this before?

Summary of the thread

A 2015 Ford BMAX owner experienced reduced engine power and diagnostics indicated a possible ECU fault. The issue was suspected to be related to a bad main relay. Another individual with a similar experience suggested checking the relay, and a workshop confirmed that a defective main relay was indeed causing the ECU issue. The problem was resolved with a repair costing 120€.

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4 comment(s)

matssturm77

Hey, I had something similar with my BMAX. Reduced power, engine light. I didn't check the codes myself, but ECU issues are possible. How old's your battery?

raphaeleule20 (community.author)

Interesting! Battery's fairly new, maybe a year old. When you had this, was it definitely the ECU, or could it have been something else? What did the garage say?

matssturm77

Well, they mentioned a relay messing with the ECU. If you don't know much about car electrics, get it to a workshop. Proper diagnosis is worth it.

raphaeleule20 (community.author)

Appreciate the help! Shop confirmed it, you were right. Defective main relay was causing the ECU issue. Cost 120€ to fix. Thanks!

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FORD

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BMAX