Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › P0172 Intermittant Volvo 850T5 › Reply To: P0172 Intermittant Volvo 850T5 September 25, 2020 at 10:31 am #963845 Don BishopParticipant Well, rats, that didn’t work. Right at like 20 miles the CEL came back on. No idea what to try to fix, I have to get in the car and drive 20 miles to see if whatever I do worked …)-: