O2 heater code being thrown
- Thread starter cagleman
- Start date
Ulysses
Enthusiast
You need to have it checked out.
Most likely an 02 sensor heater has gone bad. You will most likely need to get replaced. The computer will start to run the car richer to protect the engine. The car will start to run worst.
I just went through this about two months ago.
I just went through this about two months ago.
Dixter
Enthusiast
Just went thru this also... Its easy to do yourself but you will need to know
which one is giving the code... there are four sensors, two in the front
(left,right side) and two in the rear (left,right side)
you'll need a 7/8 wrench, they are pretty easy to get out as they come pre-packed with anti sieze goop.
Also, the front sensors have different part numbers than the rear ones and
they cost around $100 at the dealer...
To find them just jack up the car and follow the exhaust from the head towards the back of the car... you'll see them pretty quick...
which one is giving the code... there are four sensors, two in the front
(left,right side) and two in the rear (left,right side)
you'll need a 7/8 wrench, they are pretty easy to get out as they come pre-packed with anti sieze goop.
Also, the front sensors have different part numbers than the rear ones and
they cost around $100 at the dealer...
To find them just jack up the car and follow the exhaust from the head towards the back of the car... you'll see them pretty quick...
01ACR/VIPER
Enthusiast
With my header install I started to get the same codes.The o2`s were fine until I moved them 10" downstream.The 135/155 codes are for the front right and left 02`s(I am pretty sure).Does the code put the pcm in limp mode?I cleared the codes using my sct tuner but they come back after awhile.Any ideas other than replacing them(I cant see how they both went bad at the same time)?
uvbnbit
Enthusiast
From what I've been told, the '00-'02 will throw a "heat" code because they're too far away from heat source. They like the heat. You can wrap some heat/exhaust tape around the base of the O2's and before and after the O2. That'll keep the "heat" in. Or you can go to the "quick fires".
See what I learnt Chuck!!
See what I learnt Chuck!!
VIPER BAZ UK
Enthusiast
Old thread Re-born
Had this also
Just put a Roe PCM in and all sorted no more cades...
Had this also
Just put a Roe PCM in and all sorted no more cades...
JeffTheViperMan
Enthusiast
Read this thread - just solved it the other day.
http://forums.viperclub.org/rt-10-gts-discussions/625012-calling-all-viper-wizards.html
Also, take this note to heart - it's not necessarily ideal in the 00-02 cars to start it and let it sit. DC actually suggested starting it and beginning your drive - just gently at first, until the engine comes up to temp. Or at least, hold the throttle to maybe about 1,500 RPM's after starting until the heat gauge starts to climb. The P0135 and P0155 code sets within the first minute or so of operation - it's ******** because the sensors haven't seen the heat the PCM thinks it should see. So give it some extra heat (wrapping the exhaust helps - I did that too) and the quick-fire O2's from DC also. Two days now (many miles) and no codes.
Whereas the codes being thrown won't necessarily cause a problem, it WILL richen the mixture. The PCM returns to a default setting because it doesn't think it can trust the O2's. So by not dealing with the issue, you'll burn more gas.
The Quick-Fire O2's are $99 from DCperformance (call to order) and the heat shielding is available at Advance Auto Parts (made by DEI) and costs $42 for 2"x50' and the metal restraining straps are like, $10 bucks.
Jeff
http://forums.viperclub.org/rt-10-gts-discussions/625012-calling-all-viper-wizards.html
Also, take this note to heart - it's not necessarily ideal in the 00-02 cars to start it and let it sit. DC actually suggested starting it and beginning your drive - just gently at first, until the engine comes up to temp. Or at least, hold the throttle to maybe about 1,500 RPM's after starting until the heat gauge starts to climb. The P0135 and P0155 code sets within the first minute or so of operation - it's ******** because the sensors haven't seen the heat the PCM thinks it should see. So give it some extra heat (wrapping the exhaust helps - I did that too) and the quick-fire O2's from DC also. Two days now (many miles) and no codes.
Whereas the codes being thrown won't necessarily cause a problem, it WILL richen the mixture. The PCM returns to a default setting because it doesn't think it can trust the O2's. So by not dealing with the issue, you'll burn more gas.
The Quick-Fire O2's are $99 from DCperformance (call to order) and the heat shielding is available at Advance Auto Parts (made by DEI) and costs $42 for 2"x50' and the metal restraining straps are like, $10 bucks.
Jeff
