I had this problem 12,000 miles ago and it was addressed/fixed at the Volvo dealer in Cheyenne Wyoming. Just picked up a load in Southern California and the code went on again so now I’m headed to the phoenix Volvo dealer. I can’t understand why I would have the same issue just 12,000 miles later. Any ideas?
Trouble code P20EE Catalyst Efficiency Below Threshold
Discussion in 'Volvo Forum' started by Midnightrider909, Nov 7, 2019.