I received an error code related to the glow plugs on my other forum.

I replaced the glow plugs, looms, and relay, but I still have the error, and my engine shakes during the first cold start in the morning.

I visited an auto electrical shop last week, and they stated that the glow plugs are functioning fine and suggested ignoring the error code. There is no coil warning light flashing on my dashboard.

However, the engine shaking needs to be addressed, which could be due to an issue with the fuel injection system.

I scanned the injectors and noticed that one of the four injectors has a significantly higher number than the others. Does that seem correct? which could be due to an issue with the fuel injection system.

That suggests a dying injector to me.. on cylinder 4.

If you can, swap 1 & 4 around, then re scan. If the massive difference also changes cylinder, that’s more vidence that the one currently in 4 is on the way out.

It’s pretty common.