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The P20E8 Error is Not Always Due to the AdBlue Tank

Model: (Various brands) Various
Part: AdBlue warning light

Video tutorial

The classic AdBlue error is the infamous P20E8, which all diesel owners have come to know and fear. In many cases, this error indicating low urea pressure points to a problem with the tank, and most mechanics don't even open the bonnet, assuming that's the issue.

Advise them to open the bonnet, as they might find some clues; it could be a sealing issue with the system. In the case of the vehicle in the video, the engine is completely sprayed with something that is neither oil nor water or mud: it is urea that has leaked from the system, and thus the ECU rightly flagged the error, but the tank had nothing to do with it: you would have spent a lot of money, and the problem would have remained.


Updated on 11 August 2026 by ScegliAuto


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How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

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by ScegliAuto

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