My trusted S-60 just dropped a list of fault codes on me, all at the same time.

P0301 - Cylinder 1 Misfire Detected
P0446 - Evaporative Emmission Control System - Vent Control Circuit
P0420 - Catalytic Converter System - Efficiency Below Threshold (Bank 1)
P0455 - Evaporative Emmission Control System - Leak Detected (Large Leak)

Does anyone have any ideas as to the cause and remidy to any of these issues? Thanks in advance for any help!

 

for the evaporative emmission system, check ALL your vac lines to see any broken, rotted tubes replace as necessary. Is there a leak on your gas cap. Once chckd and fixed and those codes come bak, the sensors may be at fault. I can't tell u d exact fix cuz the emsission sys. on volvos r 2 complex.

 

Thanks for the tips. I'll be checking the vacume lines today.

 

for the evaporative emmission system, check ALL your vac lines to see any broken, rotted tubes replace as necessary. Is there a leak on your gas cap. Once chckd and fixed and those codes come bak, the sensors may be at fault. I can't tell u d exact fix cuz the emsission sys. on volvos r 2 complex.