Anyone Familiar With P2195 OBD Codes? (2003)

[Tuckers Baby]

After a weeklong absence from my garage and a hefty repair bill I was hoping this issue had been solved but something is still throwing the same code every 100-175 miles after clearing. Let me get you up to speed:
- First got this issue back in late March, says O2 Sensor 1 Bank 1 running lean
- Get it replaced under warranty, issue comes back a few days later in April
- Go back and leave car overnight for testing, turns out my intake gaskets are old
- They replace those as well as my throttle body (had a small crack I believe) and decarbonize the engine and clean my gas tank (they found SAND in there)
- car gets home and throws the same code late last month about 175 miles after getting fixed

Since then I’ve left it on for the most part, clearing it last Thursday to see if my new exhaust would change anything. I’m off this weekend so I’ll look into a local mechanic for some advice but figured I’d ask you guys as well. The car runs fantastic ever since I got it back from the dealership and no longer sounds like a jet turbine when idle, and my new Borla puts out a nice bassy rumble every time I push in on the accelerator.

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[350xfire]

Bunch of google references on this and every other code:

P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1) DTC

 

[davea]

P2195 Ford
Featured snippet from the web
The P2195 code is a result of the engine control module (ECM) indicating that the oxygen sensor is fluctuating outside its optimal range. ... This sensor is nicknamed the air/fuel (A/F) ratio sensor, as it monitors the air-fuel ratio of the exhaust between the engine and the catalytic converter.

 

[PrettyInCashmere]

I can't help with the techy stuff, but adding Borla system was one of our best mods .. Pure quality deep sound but not too loud that gets better with age

Nice looking car you have there!!

 

[Anthony C]

More than likely a cracked hose or leaky intake causing a bad vacuum leak if both banks are lean .... if it is just one bank I would say a defective O2 sensor..... Pull the sensor and test it.

 

[Tuckers Baby]

Bunch of google references on this and every other code:

P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1) DTC

I appreciate the link and get the general possibilities it could be, but sans what I already had replaced I wondered if anyone else had a similar problem in trying to nail down the exact cause of the code.

 

[Tuckers Baby]

I can't help with the techy stuff, but adding Borla system was one of our best mods .. Pure quality deep sound but not too loud that gets better with age

Nice looking car you have there!!

Thanks! I do my best to keep her clean as a (any nice) daily driver.

 

[Tuckers Baby]

More than likely a cracked hose or leaky intake causing a bad vacuum leak if both banks are lean .... if it is just one bank I would say a defective O2 sensor..... Pull the sensor and test it.

As stated in the OP, the intake manifold gaskets, throttle body, and O2 sensor are all brand new installed only a couple weeks ago at most. When the dealership performed a smoke test to recreate the conditions they ruled out the vacuum lines in favor of the gaskets that shrank when cold. Dealer also said while its throwing the code for bank one, bothe were running lean, so it’s not the sensors.

 

[Anthony C]

So what does your vacuum Gage say? Did you monitor the fuel trim or data log it?

 

[BillM]

had similar problem last year got error code for bank one sensor one. replaced it and month later came back used scanner and deleted code it came back a second time removed code this time has not come back yet. If it comes back again think I will do what Anthony suggested and get the fuel trim and run car with scanner on to see what is going on with car running.