Wiring, Stereo & Electronics Audio Components | Radars | Alarms - and things that spark when they shouldn't

HELP: No reading from O2 sensor

Thread Tools
 
Search this Thread
 
Old Aug 16, 2009 | 08:16 PM
  #1  
Spd-Kilz's Avatar
Thread Starter
TECH Junkie
iTrader: (35)
 
Joined: Nov 2005
Posts: 3,424
Likes: 5
From: Rack City
Default HELP: No reading from O2 sensor

My front passenger side O2 sensor is not getting a reading. I'm interested to know what the problem could be.

I am sure the O2 sensor is in perfect working order - That can't be it.

I plugged the rear O2 harness into the front O2, and switched the pins in the PCM (essentially switching the rear O2 harness and making it a front harness) and still, no reading.

What could be the problem?!
Reply
Old Aug 16, 2009 | 09:49 PM
  #2  
Scira's Avatar
TECH Enthusiast
15 Year Member
iTrader: (4)
 
Joined: Jan 2009
Posts: 563
Likes: 0
From: San Antonio
Default

That sounds odd...

Is it throwing any codes? Misfiring at all?
Reply
Old Aug 16, 2009 | 09:50 PM
  #3  
Scira's Avatar
TECH Enthusiast
15 Year Member
iTrader: (4)
 
Joined: Jan 2009
Posts: 563
Likes: 0
From: San Antonio
Default

Try throwing this into the PCM forum too. Those guys know alot about this stuff
Reply
Old Aug 16, 2009 | 10:00 PM
  #4  
Spd-Kilz's Avatar
Thread Starter
TECH Junkie
iTrader: (35)
 
Joined: Nov 2005
Posts: 3,424
Likes: 5
From: Rack City
Default

Originally Posted by Scira
Try throwing this into the PCM forum too. Those guys know alot about this stuff
I started one there as well.

The car is in open loop right now, so no codes or anything. It's just flatlining when I'm datalogging. It's not too happy when the car is put into closed loop.



I've connected the O2 sensor to the driver side rear O2 harness, and swapped the pins in the PCM. Hopefully this will work. If not, I have no idea what it might be. The PCM itself perhaps?
Reply




All times are GMT -5. The time now is 01:22 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE