V70 LiteTurbo @210K miles

Running 'rough': P0305 ":Cyclinder: 5 Misfire detected

Do the following codes cause P0305?

P1550: Charge Pressure Deviation
P0722: OUtput speed sensor circuit: no signal

Thanks much!
Doug

 

P0305s usually point to a plug or a coilpack. First I'd drop in new plugs (OEM/copper cores are best, then I'd swap coils - ie move the #5 pack to #3 and see if you suddenly get P0303 codes... If your coils have 100K or more on them are probably starting to fail where the spark is not hot enough under load.

 

Thank you. Thank you. Will get into it.