theokrueger5

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?

A 2015 Volvo XC90 diesel owner experienced issues with the AdBlue system, where the vehicle indicated an empty tank despite being refilled, accompanied by an error message and sometimes a failure to start. The problem was suspected to be with the AdBlue delivery from the tank to the dosing unit. A suggestion was made to have the system pressure tested, as a faulty pressure sensor could cause such errors. The issue was confirmed at a service center, where the defective AdBlue output was repaired.

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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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VOLVO

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XC90