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Lexus RX 330 Error code P2238 and P2241

Tiny
SRINI123
  • MEMBER
  • 2004 LEXUS RX 330
  • 3.3L
  • V6
  • AWD
  • AUTOMATIC
  • 130,000 MILES
Hi,
Thanks for helping.
I have Lexus RX 330 Japan made.
There is Check Engine and VSC light. I did check with OBD scanner. There are Error code P2238 and P2241

When I check with Mechanic, he told me to change O2 sensor.
I am just checking in internet, there are lots of conflicts. Some one say O2 sensor some one say A/F sensor.

Can you please let me know which sensor to change and any universal sensors works in this case?

Thanks & Regards
Srini

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Tuesday, February 25th, 2014 AT 1:00 AM

13 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
That is an A/F sensor shorted out or problem in that area
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Wednesday, February 26th, 2014 AT 7:39 AM
Tiny
SRINI123
  • MEMBER
  • 7 POSTS
Thanks for your reply. There is confusion due to OBD database. It says all are O2 sensors But we need to differentiate based location data like bank1 sensor 1 and bank2 sensor 1.
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Wednesday, February 26th, 2014 AT 10:00 AM
Tiny
SRINI123
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  • 7 POSTS
Is it ok to use universal sensors?
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Wednesday, February 26th, 2014 AT 10:02 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
An O2 sensor is not going to fix this. This is caused by the a/f sensor shorted out or having problems in wiring to a/f sensor. But if you really must know, bank 1 is where #1 is and #1 sensor is before converter.#2 sensor after converter.
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Wednesday, February 26th, 2014 AT 10:02 AM
Tiny
SRINI123
  • MEMBER
  • 7 POSTS
I got this image from other thread. It says AF sensors are top of the engine and O2 sensors are bottom of engine.

Thanks for your replies.
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Wednesday, February 26th, 2014 AT 10:26 AM
Tiny
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  • 7 POSTS
Is there any opinion to repair instead of replacing?

AF sensors are costlier and there are no after market parts available in Web.
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Wednesday, February 26th, 2014 AT 10:43 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
An a/f sensor is what an O2 sensor isrock auto has them form $80-120 and denso is the supplier of oem parts.
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Wednesday, February 26th, 2014 AT 12:02 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Heres a pic item A3 and A4 but I think it's beyond your capabilities.
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Wednesday, February 26th, 2014 AT 12:05 PM
Tiny
HMAC300
  • MECHANIC
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Forgot pic
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Wednesday, February 26th, 2014 AT 12:07 PM
Tiny
SRINI123
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Thank you. When AF sensor fails engine jerks while accelerate?
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Thursday, February 27th, 2014 AT 8:54 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it'snot working correctly it can cause different problems. I have no further suggestions.
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Thursday, February 27th, 2014 AT 9:26 AM
Tiny
SRINI123
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OOOPs. Mechanic replaced AF sensor and spark plugs, removed battery and reconnected Original error codes gone. Now new error P0012. And driver side window controller also not working. Any ideas?
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Saturday, March 1st, 2014 AT 10:31 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
IN THE FUTURE REPOST AS A NEW QUESTION OTHERWISE IT WILL NOT GET ANSWERED. Scan for codes for power window a pro will need to do it. It may need resetting.
It is a cam timing problem and a pro needs to fix this with a scanner. It's out of synch
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Saturday, March 1st, 2014 AT 11:13 AM

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