check engine light on

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Jul 2, 2003 | 04:23 PM

pabay

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Joined: Nov 2002

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From: MN

check engine light on

I have 1999 GS400 with 35K miles. My check engine light went on. Dealer has replaced ECU at no charge as a solution to this problem. Does this sound like a right solution?

Jul 2, 2003 | 04:25 PM

bluelex

Lexus Fanatic

Joined: Oct 2002

Posts: 11,243

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From: USA

do u have an afermarket intake on the car or bone stock?

Jul 2, 2003 | 04:27 PM

pabay

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From: MN

The car is bone stock.

Jul 2, 2003 | 04:57 PM

link13

Lead Lap

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Posts: 4,594

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From: CA, Mid OC

well

Did the ECU replacement fix the problem or is the light still on?

Jul 2, 2003 | 06:17 PM

pabay

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From: MN

It looks like it fixed for now. But, I am interested to know will ECU cause the warning light to come on.

Jul 2, 2003 | 07:54 PM

ChrisFL

Driver

Joined: May 2003

Posts: 195

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From: Florida

Odd, but yes, the ECU is what controls the light to come on. I had the same problem with the '99 I just bought, they said it was some fuel valve not working? Anyway, the light was off for 2 weeks but it's back on again.

A friend of mine who's a Toyota mechanic told me that 99% of the time, it's the O2 sensor(s) that wear out.

Jul 3, 2003 | 02:37 AM

pabay

Thread Starter

Driver School Candidate

Joined: Nov 2002

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From: MN

Thanks. This is exactly what happened to me! The engine warning light turned first time last week. Lexus dealer cleared the code.

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Jul 3, 2003 | 06:08 AM

pabay

Thread Starter

Driver School Candidate

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From: MN

Thanks.

Jul 3, 2003 | 06:13 AM

#10

LEXO

Driver

Joined: Apr 2003

Posts: 166

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From: Washington

I'm stuck with the light on too !!! I went to the nearest Toyota dealership, since the Lexus dealer is way far in the city, and they couldn't find the problem. I'm going to the Lexus dealership next week. I'm just glad I'm not the only one.