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Board index » OBD Troubleshooting Help » OBD-II P0XXX Powertrain Codes All times are UTC - 7 hours [ DST ]

P0135 2001 Mitsubishi 3.0 V6

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Roscoe	Post subject: P0135 2001 Mitsubishi 3.0 V6 Posted: Tue Apr 24, 2007 4:16 pm
Joined: Tue Apr 24, 2007 4:02 pm Posts: 3	I'm getting a PO135 indicating an upstream heated O2 Sensor heater circuit fault (bank 1). I asked the Mitsu service guy which was Bank 1, and he said front of car. Replaced the front upstream O2 sensor with a new Bosch, and cleared the codes. The Check Engine light stays off for one start, run and shut down, but comes back on the 2nd time it is started. Question: is bank one front of car?
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Sponsored Links	Post subject: P0135 2001 Mitsubishi 3.0 V6  Posted: Today
Joined: 29 Jun 2004 08:12 pm Posts: N/A
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jeff compton	Post subject: Posted: Wed Apr 25, 2007 7:18 am
Joined: Tue Jan 10, 2006 2:09 pm Posts: 5465 Location: Orleans Ontario Canada	how many 02's total on the car?
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Roscoe	Post subject: Posted: Thu Apr 26, 2007 3:36 am
Joined: Tue Apr 24, 2007 4:02 pm Posts: 3	4 - 2 upstream and 2 downstream
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Roscoe	Post subject: Posted: Thu Apr 26, 2007 3:39 am
Joined: Tue Apr 24, 2007 4:02 pm Posts: 3	I think the Mitsu service tech gave me bad information. The #1 cylinder is in the left or rear bank, not the front.
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jeff compton	Post subject: Posted: Thu Apr 26, 2007 7:33 am
Joined: Tue Jan 10, 2006 2:09 pm Posts: 5465 Location: Orleans Ontario Canada	bank 1 will be the same side of the engine as cylinder 1.
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Darkrooms	Post subject: Posted: Thu Apr 26, 2007 2:55 pm
ASE Certified Technician Joined: Thu Mar 29, 2007 9:44 am Posts: 1424	You didn't say which engine you have. 3.0? 3.5? Bank one is the bank facing the rear of the vehicle on a 3.0 (and a 3.5L).
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hobbitwho	Post subject: Re: P0135 2001 Mitsubishi 3.0 V6 Posted: Wed Aug 27, 2008 5:44 pm
Joined: Mon Apr 21, 2008 2:39 pm Posts: 7 Location: Lindon, Utah	On the Montero 3.5 Liter Engine, the BANK 1 (Which on ALL motors) is the side with #1 Cylinder. The key to figure out which is Cylinder #1 is also simple. Look at the Motor, you will discover that one Valve Cover (which Covers the Head) is further Forward (Staggered) than the other. The Cylinder which is further Forward is #1 Cylinder and Therefore BANK #1.
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skyskraper057	Post subject: Re: P0135 2001 Mitsubishi 3.0 V6 Posted: Sun Sep 14, 2008 11:02 am
Joined: Sun Sep 14, 2008 10:57 am Posts: 3	I am having the same exact problem. i have tried replacing the sensor twice in the same 1-1 bank that is facing the front of the vehicle. What gets me though, is it was working great for a week and I was getting great gas mileage again. Now I am back to square one having to pay through the nose. i think it is a wiring problem. BTW I own a 2000 Eclipse 3.0 V6.
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skyskraper057	Post subject: Re: P0135 2001 Mitsubishi 3.0 V6 Posted: Sun Sep 14, 2008 1:03 pm
Joined: Sun Sep 14, 2008 10:57 am Posts: 3	I just checked the Haynes Manual for our engine. it says the number 1 cylinder is in the rear left. Maybe thats our problem.
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