Drivers side fuel injector codes P0202,204,206 - Jeep Wrangler Forum
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Old 01-19-2020, 11:41 AM
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Drivers side fuel injector codes P0202,204,206

I have all 3 above listed codes as well as the P0300 general misfire codes.



I removed and rebuilt my 3.6L that had blown a head gasket. The Jeep had a 130K on it and I must admit looked great, could still lightly see the hone cross hatch as well as the ink stamped bearing class on all the bearing surfaces that contact the crank. If went back with standard size rings and bearings. I also had the TIPM disconnected during this process. I started it up and got the check engine light with the codes listed and of course it runs rough. The injectors are connected and there is no way all 3 injectors went bad sitting there so my problem has to be upstream. I am going to check the wiring harness to make sure it did not get damaged. Has anyone had this happen, do you know if there is a different relays or fuses for the left and right side fuel injectors. If harness is good then I guess my problem will be TIPM or control module.



Just as an fyi I double checked and triple checked the timing marks on everything before I put it together and have even looked at the picture I took plus the fuel injector codes lead me to believe that would not be the issue. Any help is greatly appreciated!!

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Old 01-19-2020, 12:05 PM   #2
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I'd really suspect that something got damaged on the common power to that bank's fuel injectors. First thing is just make sure everything is plugged in. I am pretty sure there is a small harness for that bank, at least that is what the factory wiring diagram indicates.

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Old 01-19-2020, 03:59 PM   #3
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Old 01-19-2020, 07:28 PM
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Well it now has P2305, P2311 and P2317 along with the others. So after that I took the intake off and checked and made sure everything was on good and looked for any damage to the wiring harness and could not visually see any. I had also put new coils and plugs in when I rebuilt the motor so I put the old ones back on. Cleared codes started up and same codes come up. Sounds like I may need to take it in to a shop and let someone with better OBD2 scanning equipment check it. Does anyone know if you can send your TIPM in and have it checked?
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Old 01-19-2020, 07:48 PM   #5
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Ingector O-rings new?
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Old 01-19-2020, 07:51 PM   #6
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Those codes (P2305, P2311 and P2317 ) are related to coils 2, 4, 6. Shorted or open coil circuits is one of the reasons.

There is a small harness that is for coils, injectors on cylinders 2,4,6. All the codes you have are related to the wires that go through that harness. Are you sure that plug for that harness is seated correctly?

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Old 01-19-2020, 07:56 PM   #7
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That connector for that small harness also has engine oil temp , engine oil pressure, and knock sensor in it. Any chance you have codes for that?

Here is the pin out for that fat plug in that drawing that I just posted.

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Old 01-20-2020, 11:33 AM
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Great info guys I appreciate the help and suggestions. Yes new orings as they were in my Fel-Pro complete gasket kit. I do not have codes for the oil temp, knock sensors or oil pressure. I will try taking the connector loose on the passenger side valve cover in the diagram you sent (great info Sequel) and reconnecting it. I will trace down the upside of that connector and check that as well.
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Old 02-04-2020, 04:38 PM
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I just want to close this post out as I resolved the issue. It was the harness connector on the valve cover that was shown above. The wire pins had gotten pushed back. I had to push the white piece inside the connector down and snap it back in and then pull the pins back through.
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Old 02-04-2020, 05:03 PM   #10
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Glad you got it resolved and props for coming back with what finally corrected the problem.
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Old 02-06-2020, 07:32 PM   #11
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Quote:
Originally Posted by sequel View Post
Those codes (P2305, P2311 and P2317 ) are related to coils 2, 4, 6. Shorted or open coil circuits is one of the reasons.

There is a small harness that is for coils, injectors on cylinders 2,4,6. All the codes you have are related to the wires that go through that harness. Are you sure that plug for that harness is seated correctly?

Attachment 4196871
Where’d you find that drawing?
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Old 02-06-2020, 07:59 PM   #12
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Where’d you find that drawing?
Factory service manual

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