[mnghouse]

Thanks I will check the wiring again. I have done several upgrades to my Dart and am a private mechanic and this has stumped me. Thanks again for the diagram. I'm also going to replace the aftermarket O2 sensor with a Mopar one just ti make sure the issue isn't with the aftermarket one.

 

[mnghouse]

Copy all. I have an OBD Link MX+, ALFAOBD, an Altel and other test equipment. I will look into the Torque app as well. Thanks again for the help.

 

[mnghouse]

I replaced the aftermarket Bank 1 with an OEM and still have P0133 popping up. All wires are good. I'm at a loss

 

[mnghouse]

I did a smoke check on the exhaust today and no leaks. Also getting P2096 code now. Put an OEM into bank 1 and the bosh I had into bank 2. Will drive it to work tomorrow, 160 miles round trip, and post what happens.

 

[mnghouse]

No I replaced the factory downstream with the bosch sensor to troubleshoot. Drive into work went all well. Bank 1 average. 75-.8v and bank 2 average. 65-.75v. No codes. Going to order an NGK for bank 2 today.

 

[mnghouse]

So I replaced bank 2 with and OEM and now I'm getting P0038. This is getting old. See pics for voltage. Hell, I know I have over 294k on her but I take excellent care of her. Going to warranty out the Bank 2 and see what happens. Also going to shoot the wires again. Could it be the ECU? View attachment 128388 View attachment 128389 View attachment 128390 View attachment 128388 View attachment 128389

 

[mnghouse]

Theory of operation is good. I'll have to do some ohm checks and retrace evert troubleshooting steps. Seem odd to me that the Bank 2 voltage is a constant 1.27v. I normally see fluctuating voltage.

 

[mnghouse]

Final verdict...all wiring and exhaust good. Got a faulty O2 from dealer. They warranted it out and all is good. Turns out I had 2 bad O2 sensors. Thanks to all for assistance. FYI. Here is the NTK part numbers in pic. You can also go to ngksparkplugs.com/en/part-finder and get all part numbers that were used by Momma Mopar

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