Feb 20, 2015, 01:54 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Engine and Powertrain
- How to replace oxygen sensor
Step by step instructions for do-it-yourselfers.
Browse all: Engine and Powertrain
P0135, time to replace that o2 sensor?
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
P0135, time to replace that o2 sensor?
Hello,
I'm getting a P0135 code which is for the driver side front o2 sensor. Since the code is for no heat reading I thought maybe my o2 extension wires had gone bad or burnt so I replaced it with a brand new one, code came back again.
Does that mean the o2 sensor has gone bad and I need to replace it?
I have American racing headers, my rear o2 have been removed but I have not deleted those codes yet. I'm not getting any codes for the front passenger sensor and that's what is making me think I need to replace my driver side one.
I'm getting a P0135 code which is for the driver side front o2 sensor. Since the code is for no heat reading I thought maybe my o2 extension wires had gone bad or burnt so I replaced it with a brand new one, code came back again.
Does that mean the o2 sensor has gone bad and I need to replace it?
I have American racing headers, my rear o2 have been removed but I have not deleted those codes yet. I'm not getting any codes for the front passenger sensor and that's what is making me think I need to replace my driver side one.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
I just wanted to know if I was correct my diagnoses and if there is something else to check before I put a new o2 sensor on there.
Also I checked the fuse and it is fine
Tech Contributor
Joined: Oct 1999
Posts: 41,066
Likes: 9,830
From: Charlotte, NC (formerly Endicott, NY)
If the wires are in good shape the code could be caused by either the ECM or the O2 sensor. Since you don't have the ability to check out the O2 sensor or the ECM the fault is more than likely in the sensor so it is probably cheaper to replace the O2 sensor and hope that is the cause of the code.
Bill
Bill
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
Terminal Function
A HO2S Low Signal
B HO2S High Signal
C Not used
D Ignition Voltage
E HO2S Heater Low Control
According to this diagram, I can check the E and D with an OHMS meter to see if my "heater" is working?
Or would I Touch E and a ground?
Last edited by Tikiman12; Sep 22, 2011 at 03:20 PM.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
Ok I touched E and D on the u2 sensor, not plugged into the car. And it pegged my ohm meter all the way to the right, this makes me think the heating element is working.
What could be the cause of the p0135? Could the sensor be clogged and I need to remove it to clean it?
What could be the cause of the p0135? Could the sensor be clogged and I need to remove it to clean it?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Ok I touched E and D on the u2 sensor, not plugged into the car. And it pegged my ohm meter all the way to the right, this makes me think the heating element is working.
What could be the cause of the p0135? Could the sensor be clogged and I need to remove it to clean it?
What could be the cause of the p0135? Could the sensor be clogged and I need to remove it to clean it?
The o2 sensor is probably the most commonly replaced failed part in modern cars. Your car is a 2005?....a 6-7 year old oxygen sensor. I don't know what you value your personal time to be worth but if it were me, I'd swap that bad o2 sensor and move on. If you haven't convinced yourself yet that it has gone bad, flip flop the driver's side o2 with the passenger side o2 and watch where your problem goes...you'll be looking for code P0136.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
You're troubleshooting is flawed. A dead short across those two pins does not tell you the o2 sensor is working.
The o2 sensor is probably the most commonly replaced failed part in modern cars. Your car is a 2005?....a 6-7 year old oxygen sensor. I don't know what you value your personal time to be worth but if it were me, I'd swap that bad o2 sensor and move on. If you haven't convinced yourself yet that it has gone bad, flip flop the driver's side o2 with the passenger side o2 and watch where your problem goes...you'll be looking for code P0136.
The o2 sensor is probably the most commonly replaced failed part in modern cars. Your car is a 2005?....a 6-7 year old oxygen sensor. I don't know what you value your personal time to be worth but if it were me, I'd swap that bad o2 sensor and move on. If you haven't convinced yourself yet that it has gone bad, flip flop the driver's side o2 with the passenger side o2 and watch where your problem goes...you'll be looking for code P0136.
Swapping sides is a good idea for a test
Last edited by Tikiman12; Sep 23, 2011 at 09:51 AM.
