2006 Cadillac dts CEL O2 sensor

BGPURSER

MEMBER
2006 CADILLAC DEVILLE DTS
V8
2WD
AUTOMATIC
90,000 MILES

2006 cadillac dts: CEL came on for Bank 1 O2 sensor per scan tool. Replaced O2 sensor and scan showed flat line. Drove car for less than 1 mile and CEL for same O2 sensor and output reading on scan tool showed erratic output. Bad ground, Bad ECM what could it be? Thank you

8 Replies

WRENCHTECH

MECHANIC
20,758 POSTS

What is the exact code number?

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Wednesday, June 22nd, 2011 AT 5:44 PM

BGPURSER

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5 POSTS

I don't have the code, since I had borrowed a scan tool. The code was exact for the Bank 1 O2 sensor. I should have wrote it down, but I thought it was going to be a simple fix.

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Wednesday, June 22nd, 2011 AT 6:29 PM

BGPURSER

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5 POSTS

Almost seems like a capacitor issue, but I'm guessing.

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Wednesday, June 22nd, 2011 AT 6:29 PM

WRENCHTECH

MECHANIC
20,758 POSTS

You're way out in left field with this. We need the exact code number to help you. There are dozens of different O/2 codes.

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Wednesday, June 22nd, 2011 AT 8:54 PM

BGPURSER

MEMBER
5 POSTS

Alright, I'll have to go get it rescanned. The cadillac service mechanic is the one who told me what the code meant and how to reset it after it threw the code again after replacing the O2 sensor. It'll take me a day to get it done.