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Old 05-23-2006, 11:47 AM #1
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P2238 code / where is the sensor?
Hey guys,

My CHECK ENGINE light just came on, which triggered the VSC OFF and TRAC OFF lights to come on (and systems disabled).

The truck is an 04 V6 with 27K on it.

Anyways, I ran the code and got:
P2238 O2 Sensor Positive Current Control Circuit Low - Bank 1 Sensor 1

Anyone with a shop manual know where this sensor is located? I'd like to eyeball it to make sure all 'looks' ok before leaving the car at the dealer.

I did a quick search on P2238, no hits on this forum. I did find some 03-05 Toyota TSBs but not for the 4Runner ( I saw Tundra, Rav4, Sienna, Scion)

Thanks!!!
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Old 05-23-2006, 12:09 PM #2
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Bank 1 is the side of your engine with the #1 cylinder... I am guessing it is the drivers side.... But someone please correct me if im wrong. Sensor 1 is the 02 sensor before or up stream of the catilytic converter on that side.

Sounds like you have a h02 sensor that has gone lazy and is not cycling properly.....

You can watch it with a scan tool to see if it is cycling....
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Old 05-24-2006, 08:10 PM #3
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Mr Lamb is dead right....the o2 sensor will set you back a few bucks but do the change yourself to save yourself some $$$....do a search on o2 sensors and you should find some good threads to follow up with....
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Old 05-24-2006, 09:20 PM #4
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It is covered under your warrentee.
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Old 05-25-2006, 11:56 AM #5
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Yep Yep Yep... No charge whatsoever to change out those O2 sensors. My '04 V6 has had two replaced. Took the dealer about 1 hour to get the car in, change the sensor and clear the codes (not to mention 2 smoke breaks and a coffee break in between).
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Old 05-25-2006, 05:29 PM #6
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Quote:
Originally posted by greasefingers
It is covered under your warrentee.
What do you get when you cross Warren G with a manatee?

A warrentee.

war
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Old 05-26-2006, 12:10 PM #7
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Thanks for the updates guys. I just want to make sure it wasn't some loose connection or something before goin in.

Yep, I'm still under 36K so it will be covered.
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Old 05-26-2006, 12:46 PM #8
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The oxygen sensor, being an emissions item, should be covered for 90 k miles?
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