I have a 2005 Jaguar SType 3.0, 86k miles. Love this car, all the sudden got a engine light. Got it scanned with the following codes.. P0300, P0301, P0303, P0305 and P1316. Half the things I've read say spark and/or coil packs, the other say cats converter and/or o2 sensors. Any advice on where I should start? Thanks
Since there are a bunch of P03xx codes, I think the P1316 code is the culprit.
But it doesn’t hurt to check the spark and coils either.
ok, so the misfires on 1,3,5 are on the same side of the engine. One cylinder could be dragging the other 2 down. Need a good scan tool that can get read live data and check the misfire counts and see which one of the 3 cylinders has the higher misfire count. One will likely have a much higher count, and that's likely your culprit and then go from there with your troubleshooting.
http://www.jagrepair.com/images/AutoRepairPhotos/CarPDFFiles/SType/S-Type-Electrical-2005on.pdf
1316 is faulty fi module that sounds about right
Its something that effects the entire bank of the engine, its all on the same side. P0300 means multi cyl misfire. P0301 is misfire cyl 1, P0303 is misfire cyl 3, P0305 is misfire cyl 5, and P1316 is telling you you're polluting excessively (due to the misfires). Im not sure exactly how this engines is structured, but id bet its something side specific.
