diagnostic code

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Jul 19, 2007 | 08:28 PM

esucaris1

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Lead Lap

Joined: Mar 2007

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From: So. Cal.

diagnostic code

I am getting a diagnostic code 25... I suspect ox sensor but not sure... what is the main ox sensor location??? any help???

Jul 19, 2007 | 11:31 PM

92ES5sp

Lexus Test Driver

Joined: Feb 2007

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From: Under the hood

Quote:

Originally Posted by esucaris1

I am getting a diagnostic code 25... I suspect ox sensor but not sure... what is the main ox sensor location??? any help???

Ha Haz i had the same code. it ended up being the rear O2 sensor. (Fun)

There are no vacuum leaks right? Ignition timing is good? The FSM will tell you the procedure. Jump the TE1 and E1 terminals like youre checking codes. Check the voltage between VF1 (for left bank) or VF2 (for right bank) and E1. With the engine up to temp, rev it up to 2500 and check to see if the guage fluctuates up and down while holding that rpm.

If it dosent, the sensor went to O2 sensor heaven.

Jul 20, 2007 | 05:53 AM

esucaris1

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Lead Lap

Joined: Mar 2007

Posts: 459

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From: So. Cal.

good info thanks I coundnt seem to find that in the fsm

Jul 20, 2007 | 05:07 PM

esucaris1

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Lead Lap

Joined: Mar 2007

Posts: 459

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From: So. Cal.

Last night I reset the computer by disconecting the battery and the light didnt come back on but I have faith that "my car" will screw up again

Jul 20, 2007 | 09:22 PM

92ES5sp

Lexus Test Driver

Joined: Feb 2007

Posts: 895

Likes: 2

From: Under the hood

Quote:

Originally Posted by esucaris1

Last night I reset the computer by disconecting the battery and the light didnt come back on but I have faith that "my car" will screw up again

Well normally those codes take 2 trips for the pcm to set the code. The first time it just "notices" it. The flow chart for that code starts on page EG-376 of the fsm. Is 25 the only code youre getting? Are you familiar w/ diagnostic mode 2? Its really a bummer youre having isuues with your car.

Last edited by 92ES5sp; Jul 20, 2007 at 09:26 PM. Reason: made no sense after reading it ;)

Jul 20, 2007 | 10:10 PM

esucaris1

Thread Starter

Lead Lap

Joined: Mar 2007

Posts: 459

Likes: 2

From: So. Cal.

so far yes 25 is the only one but I havent checked after I reset comp... I'm waiting for the ck eng light to come back on

Jul 20, 2007 | 10:26 PM

92ES5sp

Lexus Test Driver

Joined: Feb 2007

Posts: 895

Likes: 2

From: Under the hood

Im just curious did you swap the exhaust maifolds to your new eng? You might be waiting a while for the light to come on cuz on mine the light only came on few a minutes like twice a week. I have no idea why though i mean i checked the o2's and the left bank one was dead....