8 Codes...
 

1. P0300 Multiple misfire
2. P0301 C1 Misfire
3. P0302 C2 Misfire
4. P0102 MAF or MAV Circuit low
5. P0463 Fuel Level Sensor
6. P0113 Intake Air Sensor/Circuit
7. P219A Fuel:Air Ratio imbalance
8. P013 E 02 Sensor Delayed Response

There you have it folks, my problem. I'd like some thoughts on it. I assume 1,2,3 and 7 are due to 4,5,6 and 8. So what I've got is that my MAF is out, my 02 sensor is out, Intake air sensor is out and my fuel level sensor is out. I can do this job myself without a doubt, or should I take it to a dealership?

What are your thoughts?

Hello danielf54 and welcome to our group - :clap:

That has to be a record posting of trouble codes - :eyebulge:

What power mods does your car have?

What is the last thing you did to your car before all those codes appeared?

The first thing I would do is to disconnect the battery for a few minutes, reconnect and see which codes come back.

The next thing I would do is to check back here and see if anybody has posted, that knows what they are talking about - :)


humfrz

That's a lot of codes about a lot of things.

P0463 isn't part of the engine control system, if your fuel gauge works ignore it for the time being.
P219A can be detected via crankshaft speed variation. You've got misfires...
P0300/1/2 You've got misfires because for some reason.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~
P0102 Mass air flow meter voltage is 0.1 V or less for 0.5 seconds or more.
P0113 Intake air temperature sensor voltage is 4.7 V or more for 0.5 seconds or more.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~
P013E Heated oxygen sensor voltage is slow in dropping to 0.5 V or less for more than 4 seconds

Looking at the wiring, IAT would stick at 5V with the circuit disconnected, MAF would stick at 0V with the circuit disconnected. The obvious starting point is at the MAF connector. Unless you find something immediately evident, If you don't want to throw parts at it you'd do well to have a means of reading live data.

Slow response for the HO2S is a two trip detection, so it definitely saw a fault, but I wouldn't panic with it until the issue upstream of the engine has been sorted. It IS a 2013, it can just be an old and slow sensor. Misfires send the exhaust to the LEAN side (because you're suddenly dumping 14 times more air than fuel out of a cylinder), and that code is slow response going from rich to lean, if it was cause by the misfires I'd be more inclined to suspect it would have trouble going from lean to rich...

But then again, it's the downstream, and downstream fuel trims are a dark art indeed. Sort the intake, see if that solves your misfires, ignore the fuel level. Once intake and misfires are sorted, give it two generous drive cycles so it can rerun it's downstream monitors.

what situation brought these codes on?

Misfires due to the car needing a tune up. Did it myself but the vehicle kept misfiring so I thought that I did something wrong but the guy above said it sound like an issue with the exhaust. Which now that I think about it, I didn't toque the nuts on with a torque wrench at the time because I didn't have it with me when I was doing the repair. I think the issue is going to be from an exhaust leak, you agree?

This makes sense, I'll check the exhaust out.

Thank you.

Intake. Sort the maf and iat first