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Mercury Sterndrive Trim Relay Fault Code

Linda Z

New member
Hi everyone,

I'm new to this forum and would appreciate any advice.

I have a powerboat with 2 Mercury Sterndrive TDI 3.0L Diesel Engines with Bravo 3.

Recently, whenever I start my port engine, it starts and run for 3 minutes before the following fault code pops up, and then the port engine shuts down automatically.

Fault Code: 3182-16
Trim down relay is not working properly

Fault Code: 623-21
Driver Power Voltage is below normal limit

What are the possible causes for the fault codes, and how to fix it accordingly?
 

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