2017 IS350 Persistent CEL P2197 Code
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Driver School Candidate
Joined: Apr 2022
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From: MD
2017 IS350 Persistent CEL P2197 Code
Has anyone had this code come up? i just replaced the drivers side O2 sensor but the check engine light comes back after a two short drives...this has been very perplexing . Everything was fine before the F sport intake install when a vacuum line slipped off and threw a CEL. Since then no matter what i do nothing is working even tho the car is running fine without any sluggish performance. I am wondering if veepeak obdcheck ble+ scan toll is accurate enough for the specific cel code... my car is a well kept 2017 Fsport IS350 with 53k miles and trying to figure out this problem is like trying to hit a ghost with a tennis racket. Any help is very much appreciated.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Welcome to the forum!
To confirm, code P2197 is for the Bank 2 Sensor 1 Air Fuel Ratio sensor.
Bank 2 Sensor 2 is the Oxygen sensor.
Did you replace the sensor that's in the Driver's side Exhaust manifold before the cat?
What part number was the sensor?
To confirm, code P2197 is for the Bank 2 Sensor 1 Air Fuel Ratio sensor.
Bank 2 Sensor 2 is the Oxygen sensor.
Did you replace the sensor that's in the Driver's side Exhaust manifold before the cat?
What part number was the sensor?
Thread Starter
Driver School Candidate
Joined: Apr 2022
Posts: 3
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From: MD
Thank you for your reply. You're right its is the air fuel sensor that's the closest one to the motor. Do you know how often they go bad? im a bit worried about spending close to 300$ and still not resolving the problem.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
There are so many factors that can contribute to AF and O2 sensors dying early, but typically you should be able to get 10-15 years out of a sensor.
What brand sensor did you put in? Do you know the part number for it?
Typically I use Denso sensors if I have to replace one as they supply Toyota for the OEM sensors.
What brand sensor did you put in? Do you know the part number for it?
Typically I use Denso sensors if I have to replace one as they supply Toyota for the OEM sensors.
Thread Starter
Driver School Candidate
Joined: Apr 2022
Posts: 3
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From: MD
There are so many factors that can contribute to AF and O2 sensors dying early, but typically you should be able to get 10-15 years out of a sensor.
What brand sensor did you put in? Do you know the part number for it?
Typically I use Denso sensors if I have to replace one as they supply Toyota for the OEM sensors.
What brand sensor did you put in? Do you know the part number for it?
Typically I use Denso sensors if I have to replace one as they supply Toyota for the OEM sensors.
Racer
Joined: Sep 2017
Posts: 1,692
Likes: 382
From: nj
I had a problem like this for my 2010 Corolla. Autozone used their scan tool for me for free and it said it was an O2 sensor. Used an aftermarket sensor, didn't fix it. Tried again, didn't work. Finally took it to Toyota to get diagnosed and they saw that the o2 sensor (somewhere under neath the driver seat) + an air fuel ratio sensor was bad. If it keeps happening, instead of wasting more time and money, just go get it diagnosed and if you want to save money, get it done somewhere else. I think I got a deal and they ended up doing it for me.
Pit Crew
Joined: Jan 2021
Posts: 121
Likes: 59
From: Colorado
I had a problem like this for my 2010 Corolla. Autozone used their scan tool for me for free and it said it was an O2 sensor. Used an aftermarket sensor, didn't fix it. Tried again, didn't work. Finally took it to Toyota to get diagnosed and they saw that the o2 sensor (somewhere under neath the driver seat) + an air fuel ratio sensor was bad. If it keeps happening, instead of wasting more time and money, just go get it diagnosed and if you want to save money, get it done somewhere else. I think I got a deal and they ended up doing it for me.
A lot of people fault technicians and shops for being expensive and granted I can certainly understand, but we have access to a ton of support that gives us information that most DIY'ers don't get.
To OP, sensors are fickle little things and like Sasnuke stated already there's tons of factors that cause them to go bad. Sometimes even a small occurrence can create a lean bias in the other sensors too and is never resolved until the upstream and downstream sensors are replaced as a pair.
- Shane
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6th Gear
Joined: Jul 2020
Posts: 6
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From: Canada
There are so many factors that can contribute to AF and O2 sensors dying early, but typically you should be able to get 10-15 years out of a sensor.
What brand sensor did you put in? Do you know the part number for it?
Typically I use Denso sensors if I have to replace one as they supply Toyota for the OEM sensors.
What brand sensor did you put in? Do you know the part number for it?
Typically I use Denso sensors if I have to replace one as they supply Toyota for the OEM sensors.
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