V70 NOx Sensor Failure

I had a similar issue with my V70. Was the error code specifically pointing to the NOx sensor? Have you checked the catalytic converter for any signs of damage?

Yes, the error code indicates a NOx sensor malfunction. I visually inspected the catalytic converter and didn't see any obvious damage. Could the faulty NOx sensor impact catalytic converter performance?

In my case, a faulty NOx sensor was indeed impacting the catalytic converter. The sensor malfunctioned and skewed the readings. I would suggest taking it to a workshop, as the sensor probably needs to be replaced.

Thank you for confirming my suspicions. I will schedule an appointment with a trusted mechanic to replace the NOx sensor. I anticipate a repair cost of around 95€.