[Viken365]

Replaced the oil filter housing gasket and the intake manifold the other day. Upon completion, engine would crank but not start. I’m getting drive train malfunction off ingition start. Tested the car for codes and these are the ones it’s shooting.
I checked all the connections in the connections and they all seem to be seated properly.
Any suggestions?

[fortythirtyfive]

Looks like a power supply issue considering you have a voltage code, I would run back over all your wiring that you either removed or disturbed.

You're aware that you need to prime your system before running the engine after the OFHG right? You'll have ran the system dry which in turn will seize the car within minutes of starting it. A lot of people will tell you to pull the fuel fuse but I and a few others can confirm that this doesn't stop it, you're best unplugging the coilpacks to stop it turning over.

In fact as I'm typing this I'm wondering if you did the above as a preventive and forgot to connect it all back up? I know that sounds mad, but if you were aware of the above; did you reconnect it all?

[Viken365]

I was not aware. Coil packs were not unplugged throughout this process. I went back and retraced my steps to made sure everything was plugged in properly. Just replaced my cam shaft sensor and problem continues

[fortythirtyfive]

Originally Posted by Viken365

I was not aware. Coil packs were not unplugged throughout this process. I went back and retraced my steps to made sure everything was plugged in properly. Just replaced my cam shaft sensor and problem continues

Okay this could be a saving grace, it's not overly well documented but if you ask people about it later on they'll warn you about priming lol. It's to do with the fact you let the system go dry a little whilst changing the gasket.

Are those codes above present, i.e have you cleared them all out and then started fresh to see whats genuinely present right now?

Just be 100% sure you have primed your oil by cranking it with no fuel supply (coilpacks / injectors disconnected) there's a fair few who have had it replaced, driven down the road and the motor seizes. Some reckon you can get away with pouring some oil through the filter housing after completing the job, personally I'd just do a both to be safe.

[yupetc]

Priming the oil is necessary after an OFHG job, but it won't cause the type of codes you get after doing this.

From the looks of it, I think you should look under your intake manifold and check those wiring harnesses on the ECU. I reckon something pinched or not plugged firmly in place there. Also, your EVAP line appears to be open to atmosphere, could have forgotten to snap your EVAP lines together around the intake manifold. Check those first. There's a vacuum line to snap onto the bottom side of the throttle body, too.