Terracan Diesel Reset Quantity Drift Compensation

Sounds like a faulty injector. The error code likely refers to the ECU trying to compensate for an injector that's not delivering the correct amount of fuel. Before you reset anything, have you checked the injector wiring and connections? Are you sure about the error code, and have you tried looking that specific wording up?

I double-checked the wiring – all seems solid, no obvious frays or loose connections. I looked up the error code, and that's where I got the "reset quantity drift compensation" wording from. So, if it is the injector at fault how do I do the compensation adjustment? Is there a reset procedure I can follow, or does this mean a trip to the shop?

If you've checked the wiring and the error persists, it's highly likely the injector itself is failing. A proper reset and compensation adjustment usually require specialized diagnostic tools that can communicate with the ECU. You could try some generic OBD reset, but I would recommend visiting a workshop, as further usage with a defective injector may damage your engine.

Thanks for the advice. I was hoping to avoid the shop, but it seems like you're right. I took it in, and you nailed it – faulty injector. They replaced the injector, did some sort of system reset thing, and recalibrated everything. Cost me 515€ all in. Runs like a champ now. Lesson learned!