Replacing AF Sensor with code 1155
Thread Starter
Driver School Candidate
Joined: Aug 2012
Posts: 8
Likes: 0
From: FL
Replacing AF Sensor with code 1155
Hi all,
I'm new here but have been looking over the forum for info about my code p1155. I got scanned at AutoZone and they said it's AF sensor Bank 2 Sensor 1. I am aware of the location but I have a few questions.
My 02 has 102k and I just had the timing belt package (water pump, tensioners, cam seals, radiator flush, hoses and drive belts). Yes I know that is more than the timing belt package usually is but they recommended it...whether it was necessary or not, I do not know but it's done. However about a week after, the CEL and VSC lights came on and I got the code scanned.
1. Could the repair shop be at fault or does it sound like a strange/unfortunate coincidence? Apparently AF's can become pretty fragile.
2. I bought the new 234-9009 Denso from NAPA. They actually price matched Amazon at 95 and change. Should I just replace it and reset the ECU and call it a day?
3. Can i just reset the ECU like I've read and see if that clears the code? Negative terminal or ECU fuse right?
I ran across a horror story of someone doing the same repair and then soon needing to replace/rebuild the engine.
By the way, my RX was in the shop for 2 days for the timing belt work...might have been a little over the guys heads, not sure. 1200 big ones for all the work.
Thanks for any info.
I'm new here but have been looking over the forum for info about my code p1155. I got scanned at AutoZone and they said it's AF sensor Bank 2 Sensor 1. I am aware of the location but I have a few questions.
My 02 has 102k and I just had the timing belt package (water pump, tensioners, cam seals, radiator flush, hoses and drive belts). Yes I know that is more than the timing belt package usually is but they recommended it...whether it was necessary or not, I do not know but it's done. However about a week after, the CEL and VSC lights came on and I got the code scanned.
1. Could the repair shop be at fault or does it sound like a strange/unfortunate coincidence? Apparently AF's can become pretty fragile.
2. I bought the new 234-9009 Denso from NAPA. They actually price matched Amazon at 95 and change. Should I just replace it and reset the ECU and call it a day?
3. Can i just reset the ECU like I've read and see if that clears the code? Negative terminal or ECU fuse right?
I ran across a horror story of someone doing the same repair and then soon needing to replace/rebuild the engine.
By the way, my RX was in the shop for 2 days for the timing belt work...might have been a little over the guys heads, not sure. 1200 big ones for all the work.
Thanks for any info.
Lexus Test Driver
Joined: Aug 2009
Posts: 5,723
Likes: 114
From: NJ
Welcome to Club Lexus!
1. No the A/F sensor usually have a life expectancy of around 100k miles, so it's just an unfortunate coincidence.
Here's the DIY: https://www.clublexus.com/forums/rx-...-sensor-3.html
Start at post #44
2. Yup, just replace it and reset the ECU.
3. Either or. I suggest negative terminal though. But keep in mind that will erase radio presets, memory seat, etc.
1. No the A/F sensor usually have a life expectancy of around 100k miles, so it's just an unfortunate coincidence.
Here's the DIY: https://www.clublexus.com/forums/rx-...-sensor-3.html
Start at post #44
2. Yup, just replace it and reset the ECU.
3. Either or. I suggest negative terminal though. But keep in mind that will erase radio presets, memory seat, etc.
Pit Crew
Joined: Jun 2010
Posts: 143
Likes: 26
From: Hershey, Pa
Hey Broad,
Welcome to the board...people here are a TON of help! I read this site every day, but don't post much. I just did the Bank 1 Sensor 1 on my 2000 RX300 this AM. Must be the day for them....
Welcome to the board...people here are a TON of help! I read this site every day, but don't post much. I just did the Bank 1 Sensor 1 on my 2000 RX300 this AM. Must be the day for them....
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