What part do you replace with a P2195 Code - 2004 Ford Focus

https://www.autocodes.com/p2195_ford.html

02 sensor signal stuck lean bank 1 sensor 1

Here is what I found for code explanations:
P1450 Self test detected excessive fuel tank vacuum
P2195 O2 sensor signal stuck
P144a possible canister purge valve problem

Hope this helps you out.

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Why have you not used Google to look up P2195 ?

That code has nothing to do with fuel pressure

It is the same as the 170 O2 Codes & tells you the switching
rate of the HO2S-11 is too slow

If everyone did Preventative Maintenance ,or know anything
about doing it, on all vehicles, you won't have those problems

All upstream oxygen sensors get replaced at 100,000 miles because they fail or slow down.


The internet has all you ever need to study or learn about
the motor vehicle & it's systems,just have to be willing to
use it

First code P0771 is shift solenoid E is stuck or has a performance problem.Code P0128 could be low coolant,leaking or stuck open thermostat,faulty coolant fan (running to much) or faulty coolant temperature sensor.Code P0171 fuel system to lean usally its a dirty mas air flow sensor or a weak fuel pump,fuel filter or fuel pressure regulator. Code P2195 is oxygen sensor stuck lean bank1 sensor 1.I would check for low fuel pressure causing the lean condition or faulty injectors (clogged).Also i would replace the coolant temperature sensor.

code p2195, air fuel sensor b1s1 bad. Change the sensor and you will restore the power. Lack of HO2s11 means it is running lean. Change the sensor.

Have you replaced the fuel filter? That may be the culprit.

p2195 is a code set by the o2 sensor, replace the oyxgen sensor /air fuel sensor theres 2 so replace the one on the exhaust manifold closeest to engine then reset the light and it will fix your problem, here a picture to help you to know what im talking about. hope this is helpful.

There is a TSB for this car (Avalon) to replace both AF sensors and bank 1 exhaust manifold/convertor . Its covered under your 3yr/36k warranty.