DCoolBeans

So yeah I noticed today that my check engine & traction warning lights where on. I've had the PPE headers on for 2-3 months now with no problems. I haven't done anything new to the car. Gas cap is tight btw. I scanned the code at AutoZone and it read one error:

P2195 Air fuel sensor signal stuck lean:
-Failed AF sensor
-Failed AF sensor heater
-Failed AF sensor heater relay
-low fuel pressure, plugged injector, vacuum leak


Any idea?

SeanGTS

iTrader: (1)

Make sure the ground is secure under the fuse box where the wires were messed with, reset it, see if it returns. Search for my old thread, I think it was the same code.

DCoolBeans

Hey Sean, I read your post and you had these 2 codes: PO159 and PO139. So you had a grounding issue?

I emailed PPE late last night and I will call them today and see if they can help

Imma look at the ground wire in a few. I reset the code when I had it ran and it came back within a few miles

SeanGTS

iTrader: (1)

Eeeww.. If it came back right away then you will probably have to replace that sensor.

2ndGF

iTrader: (1)

Beans - keep us posted on what you find out

DCoolBeans

"We haven't seen that code before. It is for the front O2 sensor. I have attached the install instructions for the O2 conditioner. Make sure all the wires are pushed firmly into the connector for the ECU. Sometimes the wires can come a little loose when pulling out the connectors to wire in the O2 conditioner."
Paul from PPE

Been raining on and off today. Imma check out the connections tomorrow

Juanca

iTrader: (5)

Hey Danny, give JC a call and explain what happened, he may be able to help. I'll be there probably early next week for the springs' installation.

eoph

When I had that code, it was because the wiring for the passenger side a/f sensor had to be extended during the installation, due to the relocation of the a/f sensor. After driving for a while the connection got loose/bad and caused this.

DCoolBeans

^ How'd you fix it? Order a new connection or?

RCB

iTrader: (18)

I don't have the wiring diagram in front of me but I'm pretty sure you can perform a continuity test from the PCM connector to the sensor side of the extension harness to give yourself an idea if the extension harness is giving you an issue. It just seems like a logical place to start in my mind.

eoph

I used those connectors that have solder inside and heat shrink to prevent water from going inside. It'll be a pain to fix though, due to the tight fitment.

lobuxracer

iTrader: (2)

I'd use these instead. No solder to wick up the wire and stress fracture under the insulation.

Juanca

iTrader: (5)

Installation was done by JM Lexus so I'm sure they did a good job, my guess is that no soldering was done.

DCoolBeans

All the wires from the 02 conditioner to the ecu are tight and look good. Paul sent out 2 new 02 wire extenders, and will be installing them as soon as they get here. We still don't know why I'm getting the code :/ If the new wires don't help then I guess next route would be a new 02 conditioner ...ugghh

DCoolBeans

Engine code gone/fixed problem was = Bad A/F Sensor

I didn't know these thing go bad? I don't even know how it went dead. I inspected it and looked normal to me. Glad its fixed though.