wdj Can anyone help me with my 90 240 b23 auto. I was driving along all good then out of the blue the warning light for the cat came on and the engine stopped. Drifted to the curb turned everything off and restarted easily but the green triangle in the red square is still on and it doesn't seem to be running as well. Get the one flash then four after that in the number six port in the plastic block near the left bonnet hinge. I don't know where to start with diagnosis. Any help would be greatly appreciated. Thanks. Bill
timbo Your on the right track but you need to check A2 - fuel and A6 - ignition.The fault codes are 3 digit so have another go at reading them . https://www.volvoforums.org.uk/showthread.php?t=122391
wdj Thanks Tim this link is brilliant. Anyone who has a 90 240 should print out this information. Bill