check engine light still on

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Dec 20, 2007 | 12:18 PM

topel98

Thread Starter

Overlanding

Joined: Nov 2007

Posts: 15

Likes: 0

check engine light still on

I ran a diagnostic on my98 disco and it said to that I had bad O2 sensors. I changed them, reset it and the check engine light came back on 24 hours later. Any ideas?

Dec 20, 2007 | 12:20 PM

98roverguy

Recovery Vehicle

Joined: Aug 2006

Posts: 1,002

Likes: 2

From: Colorado Springs, CO

RE: check engine light still on

What is the code now? Did you replace all 4 of them?

Dec 20, 2007 | 12:21 PM

98roverguy

Recovery Vehicle

Joined: Aug 2006

Posts: 1,002

Likes: 2

From: Colorado Springs, CO

RE: check engine light still on

How many miles?

Dec 20, 2007 | 02:41 PM

topel98

Thread Starter

Overlanding

Joined: Nov 2007

Posts: 15

Likes: 0

RE: check engine light still on

replaced all 4 of them and 84K miles on it. i haven't hooked it back up yet to see what the code reading is but am going to this weekend

Dec 22, 2007 | 03:19 PM

topel98

Thread Starter

Overlanding

Joined: Nov 2007

Posts: 15

Likes: 0

RE: check engine light still on

the code is P1187 HO2S heater short circuit upstream sensor..........OK what is it and how difficult to fix.........thanks everyone

Dec 22, 2007 | 05:17 PM

okdiscoguy

Camel Trophy

Joined: Feb 2007

Posts: 4,959

Likes: 11

From: Tulsa, OK

RE: check engine light still on

I posted a reply on your other thread. Did you wire these in yourself?

Dec 22, 2007 | 05:57 PM

Disco Mike

Administrator

Joined: Apr 2006

Posts: 25,707

Likes: 107

From: Denver, Colorado

RE: check engine light still on

Check the connection, if all is OK then call your supplier and see how he wants to warranty the replacement.

Jan 7, 2009 | 05:51 PM

Greenagain

4th Gear

Joined: Jan 2008

Posts: 4

Likes: 0

From:

RE: check engine light still on

I also have PO441 showing up under my CHECK ENGINE Light. Is it a gas cap or valve and what are the expenses to fix, etc...

Thanks Matt Lively

Jan 7, 2009 | 06:19 PM

Disco Mike

Administrator

Joined: Apr 2006

Posts: 25,707

Likes: 107

From: Denver, Colorado

RE: check engine light still on

Nope, it is an incorrect purge flow.

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