Code P0135 - Heat Circuit Malfunction

BlackSi10 · 03-07-2007, 06:58 PM

This cel code came on when i got my comptech header and rt high flow cat came on. I thought it was bc of the 2nd o2 sensor but i guess not. Do I need to replace my o2 sensor? Any help would be great.

BlackSi10 · 03-07-2007, 08:00 PM

bump..please

BlackSi10 · 03-08-2007, 01:55 AM

nobody knows anything?

***ominous8204*** · 03-08-2007, 02:17 AM

I'm getting a CEL on my K&N SRI with my R18...where/what did you use to scan your code?

BlackSi10 · 03-08-2007, 10:03 AM

Quote:

Originally Posted by ominous8204

I'm getting a CEL on my K&N SRI with my R18...where/what did you use to scan your code?

i got auto zone to do it for free.

Kidekat · 03-08-2007, 02:20 PM

There should be 4 wires on your O2 sensor. Two of the four are used to warm up your O2 sensor for cold start cycling (hence they are designated Heater +/-). The O2 sensor will still work per se, but you will just run rich at cold start, and the annoyance of the CEL.

Maybe the wires were some how torn during your header installation.

Pull them off and check them with a Meter.

ServiceTech · 03-08-2007, 08:53 PM

what he said... yeah thats a O2 code check the wires on the one closest to whatever you just installed or mabey its just bad. Accord 2.4's had this problem alot and when that code came up it was usually bad 9 times out of 10

BlackSi10 · 03-08-2007, 10:05 PM

Quote:

Originally Posted by ServiceTech

what he said... yeah thats a O2 code check the wires on the one closest to whatever you just installed or mabey its just bad. Accord 2.4's had this problem alot and when that code came up it was usually bad 9 times out of 10

So i should check the wires first...then if they are fine its probably the sensor. Wheres the cheapest place to get a good senor?

***ominous8204*** · 03-08-2007, 10:09 PM

Quote:

Originally Posted by BlackSi10

i got auto zone to do it for free.

Auto Zone couldn't read mine....neither could Advance Auto Parts...both came up with a connection error.

BlackSi10 · 03-08-2007, 10:19 PM

Quote:

Originally Posted by ominous8204

Auto Zone couldn't read mine....neither could Advance Auto Parts...both came up with a connection error.

yea oreileys couldnt read mine and neither could this muffler place. I almost had to take it to honda, but luckily auto zone could. Since its so new, maybe its not in everybodys system or something.

***ominous8204*** · 03-08-2007, 10:24 PM

Quote:

Originally Posted by BlackSi10

yea oreileys couldnt read mine and neither could this muffler place. I almost had to take it to honda, but luckily auto zone could. Since its so new, maybe its not in everybodys system or something.

Yea, he told me last week to come back by this week because he sent off the scanner to get it refreshed or something.

ken42o · 03-12-2007, 11:50 AM

Quote:

Originally Posted by ominous8204

Auto Zone couldn't read mine....neither could Advance Auto Parts...both came up with a connection error.

thats coz the young lads that work there dont know how to work a damn scanner! lol

03-07-2007, 06:58 PM	#1 (permalink)
BlackSi10 Senior Member Join Date: May 2006 Location: Birmingham, Alabama Age: 21 Posts: 731 FG Squad Member #350 iTrader: 6 / 100%	Code P0135 - Heat Circuit Malfunction This cel code came on when i got my comptech header and rt high flow cat came on. I thought it was bc of the 2nd o2 sensor but i guess not. Do I need to replace my o2 sensor? Any help would be great.

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03-07-2007, 08:00 PM	#2 (permalink)
BlackSi10 Senior Member Join Date: May 2006 Location: Birmingham, Alabama Age: 21 Posts: 731 FG Squad Member #350 iTrader: 6 / 100%	bump..please

03-08-2007, 01:55 AM	#3 (permalink)
BlackSi10 Senior Member Join Date: May 2006 Location: Birmingham, Alabama Age: 21 Posts: 731 FG Squad Member #350 iTrader: 6 / 100%	nobody knows anything?

03-08-2007, 02:17 AM	#4 (permalink)
*ominous8204* Non-FG*Squad_Member 37 Join Date: Jul 2006 Location: Mobile, AL Age: 20 Posts: 1,258 Chris - Mmmm, VTEC!!! iTrader: 5 / 100%	I'm getting a CEL on my K&N SRI with my R18...where/what did you use to scan your code?

03-08-2007, 02:20 PM	#6 (permalink)
Kidekat Senior Member Join Date: Jan 2007 Location: Placentia, CA Posts: 715 iTrader: 0 / 0%	There should be 4 wires on your O2 sensor. Two of the four are used to warm up your O2 sensor for cold start cycling (hence they are designated Heater +/-). The O2 sensor will still work per se, but you will just run rich at cold start, and the annoyance of the CEL. Maybe the wires were some how torn during your header installation. Pull them off and check them with a Meter.

03-08-2007, 08:53 PM	#7 (permalink)
ServiceTech Junior Member Join Date: Mar 2007 Location: Florida Posts: 4 John iTrader: 0 / 0%	what he said... yeah thats a O2 code check the wires on the one closest to whatever you just installed or mabey its just bad. Accord 2.4's had this problem alot and when that code came up it was usually bad 9 times out of 10