Misfire fixed and running like it was before!

New battery and replaced the ignition coil. Done!

Next thing to fix looks to be the O2 sensor. That is still an issue. So I will need to address that one.

P0420 [0x0420]
Catalytic converter system, bank 1 - efficiency below threshold
Catalyst System Efficiency Below Threshold
Status: Confirmed
----------------------------
P0130 [0x0130]
Heated oxygen sensor (HO2S) 1, bank 1 - circuit malfunction
O2 Sensor Circuit
Status: Confirmed
----------------------------
P2251 [0x2251]
Heated oxygen sensor (HO2S) 1, bank 1, negative current control - open circuit
O2 Sensor Negative Current Control Circuit/Open
Status: Confirmed

Thoughts on that? Check the wiring on it or just swap it out?

 

Great work!

 

Ignore cat code P0420 until you fix the upstream O2 sensor issue, which seems to be caused by an open sensor circuit. Make sure that the O2 sensor connector is full seated and that the connector pins are not corroded or damaged. Next inspect all of the O2 sensor wires for a break or damage. If you find no issues, replace the O2 sensor.

 

Thanks again! I will check that out! Happy to have this dude running better. Very happy with the idea to buy that better Creader Elite! It went on a lightning deal on Amazon for $118 so I snagged it up. Much better than the old ELM BT reader I was using before.

 

Is the upstream a 4 or 5 wire? I keep seeing both options.

 

N12 or N14 engine?

N12 has a 5-wire sensor
N14 has a 6-wire sensor

 

Non turbo so N12. Sounds good! Thanks again!