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Roger, BMW Master Tech
Category: BMW
Satisfied Customers: 3045
Experience:  10 yrs. experience as BMW Master Technician, shop foreman and dealer.
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Have code 54 in dme but no info on repairs supply to dme

Customer Question

have code 54 in dme but no info on repairs for power supply to dme main relay
JA: Tell me a bit more about what's going on so he can help you best.
Customer: the car works fine just has the engine light on with code 54
JA: Are you hoping to fix this yourself?
Customer: yes I am a mechanic
JA: Great! What have you tried so far?
Customer: i have checked all the wiring to all the pins on ecu and tcm and relays, all are fine and have voltage and ground. i have tested the relay and it seems to at least be clicking when power is supplied
JA: Cars do make very odd noises -- They help the mechanics figure out what's wrong. They are terrific with my old Grand Cherokee. Is there anything else the BMW Mechanic should be aware of about your BMW?
Customer: the only recent issue was the fuel pump but i replaced that and have had the code since
JA: I'm sending you to a secure page on JustAnswer so you can place the $5 fully refundable deposit now. While you're filling out that form, I'll tell the BMW Mechanic about your situation and connect you two.
Submitted: 1 year ago.
Category: BMW
Expert:  Kenny replied 1 year ago.

What type of BMW do you own? Year and model?