XC90 AdBlue System Issue

Hi, I'm having AdBlue issues with my 2015 Volvo XC90 diesel. It says the AdBlue tank is empty even after refilling. There's an error message on the speedometer and a stored error code. Sometimes the engine won't start. I suspect a problem with the AdBlue delivery from the tank to the dosing unit. Anyone else had this?

4 comment(s)

I've had similar issues with my XC90. The AdBlue system can be sensitive. Have you had the system pressure tested? A faulty pressure sensor can trigger those false empty tank errors.

Thanks. Can you tell me more about the pressure test? Can I do it with a standard OBD-II scanner, or do I need special tools?

Some advanced OBD-II scanners might give pressure readings, but a full diagnosis usually needs Volvo-specific equipment. Given the symptoms, I'd suggest a qualified workshop. They can find the exact problem.

Thanks for the advice. I took it to a service center, and you were right, the AdBlue output from the tank to the dosing unit was defective. The repair cost 250€.

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