Check the battery health then check wiring and connectors going to the coil packs. Keep in mind that the bolt holding down the coil pack is one of the grounds, the metal under the bolt must be clean so that it will get good electrical contact. The P0351 - P0356 = Volvo codes ECM-360B - ECM-365B ECM...

Thank yuh for the replies, the previous owner said they had the plugs and coils all replaced this year. Any other ideas?

RickHaleParker wrote: ↑17 Dec 2019, 04:05 You just got the Truck. Clear all the codes and see what if any comes back. What you are looking at maybe long gone.

I did clear them, they come back almost immediately. The check engine light starts blinking and you feel the engine running awful.

Edit

Hey guys, I purchased a 2004 XC90 T6 and when I drove it the day after purchasing I got multiple codes. P0351, P0353, P0356, P0352, P0354 and P0304. The first 5 codes are for ignition coil and the last one is misfire cylinder 4. Can you guys give me any direction? I was SO excited to drive my new ri...