Help Troubleshoot my '14 Shelby

[Grabber07']

The dealer would be the only option for a harness. Here is the wiring diagram for the O2's. I will look to see if I can find the harness info.

Thank you for the diagram!! Very helpful. And I believe you are correct, the dealer is the only option here for the harness.

I have a question for the OP

If you put her back to stock, have you datalogged her running stock? I ask because you keep referring back to the on board AFR gauge, what if that system itself is stuck and reading wrong?

I had the same logic as you, but after datalogging it revealed that the O2 was not responding in Bank 1.

 

[Grabber07']

UPDATE: Through the help of Van at Revan Racing and Lund II, we were able to pinpoint the possible source (Think we found it!)

Factory wiring harness looks to have one pin that the copper connection point has recessed into the connector. The pin no longer was making contact, therefore it was not able to effectively send information

Drivers Side Connector (Has all copper connection points)

Passenger Connector (Problem O2 and lower middle pin missing copper)

Will be fixing it this week and report back. Thanks again Van!

 

[BrunotheBoxer]

That's got to be it.

 

[sb03cobra]

Glad to see you found it. Hopefully you can just push the pin back in and it will lock. If not, worst case is a new connector.

 

[Mr. Freeze]

subin' for diagram , it was useful.

 

[Snoopy49]

 

[Snoopy49]

NOTE: If necessary, lubricate the HO2S threads with penetrating and lock lubricant to aid in removal.

Using a crowfoot wrench, remove the HO2S .
Calculate the correct torque wrench setting for the following torque. Refer to the Torque Wrench Adapter Formulas in the Appendix.
To install, use a crowfoot wrench, tighten to 48 Nm (35 lb-ft).

View attachment Torque Wrench Adapter Formulas.pdf

 

[03terminat0r]

I am having the same problem. P0135 and P0175 codes are being thrown. I replaced the 02 sensor and it did not fix the problem. My air fuel gauge is also stuck at 14 like OP's. Did you ever solve this issue?

 

[C0bra99]

I am having the same problem. P0135 and P0175 codes are being thrown. I replaced the 02 sensor and it did not fix the problem. My air fuel gauge is also stuck at 14 like OP's. Did you ever solve this issue?

I think they did it was a pin in the harness wasn't making contact for the O2 sensor.

UPDATE: Through the help of Van at Revan Racing and Lund II, we were able to pinpoint the possible source (Think we found it!)

Factory wiring harness looks to have one pin that the copper connection point has recessed into the connector. The pin no longer was making contact, therefore it was not able to effectively send information

Drivers Side Connector (Has all copper connection points)




Passenger Connector (Problem O2 and lower middle pin missing copper)




Will be fixing it this week and report back. Thanks again Van!

 

[03terminat0r]

Alright thanks! Hopefully it is my harness because I don't know what else it could be.

 

[Live Faster]

Alright thanks! Hopefully it is my harness because I don't know what else it could be.

Happened to me as well when my LT headers were installed. Identical problem as OP,passenger side O2 sensor pigtail had a wired pulled out of it.

 

[03terminat0r]

Did you get a new harness from ford directly?

 

[Live Faster]

Did you get a new harness from ford directly?

Nope got another pigtail,soleldered it up and heat shrink on all the connections.

 

[Grabber07']

Sorry guys, looks like I never reported back. That copper recessed connection was the culprit. Wiring harness was replaced and all was fixed. I could have also just changed out the connection and that would have done it.