Which engine do you have? V6, I4 gas, or I4 diesel?

The FSM that I have only covers the I4 gas engine. And it does not list the P2631 trouble code.

O2 sensor codes are usually in the range of P013X (0-9), P014X (0-7), P015X (0-9), and P016X (0-7). Are you sure the code you posted is correct?

 

do you have a list of codes for the j20a? mine had one that was p607(i think i looked at it then cleared the code and forgot, was something todo with control module i think)

 

It's a 2006 V6 2.7 liter engine.
I'm positive about the code number (P2631)
I used a brand new OT-680 CAN code scanner.
Thanks

 

OK, that code must be unique to the 2.7 engine.

Sorry I couldn't help more. Perhaps someone with the FSM for the 2.7 engine will chime in.

 

they changed the name of the upsteam o2 sensors to air/fuel sensors, P2631 is sensor 1 bank 2. i believe that is the left bank pre-cat sensor. bootom line the fault is either the sensor, wiring or the ECM.

 

I would put a new O2 sensor in it and go from there. Rarely is the wiring ever screwed up unless mice chewed it up or something. I have seen that before where mice chewed O2 sensor wires and they were shorted against the engine block.

 

for the 2006 GV, the upstream sensor is not an O2 sensor, but an Air/Fuel sensor, also called a "wideband O2 sensor" sometimes (this was mentioned above, but it's not just "called" an A/F sensor now, it's actually a different type of sensor...not interchangable).
This trouble code is regarding a resistor built into the sensor that serves as a reference point by which the ECM can judge the output of the actual sensor. If the resistance value of this resistor is out of what the ECM considers acceptable, you get either this trouble code P2631, or P2630, depending on if the resistor is shorted or opened. This resistor is unfortunately not available by itself...just with a whole new sensor.
Iten #10 is the bad boy that failed.

I've actually replaced a couple of these sensors, so while not a "issue," this isn't totally unheard of...oddly all have been the same side. The sensor in question is the upstream sensor on the engine's right side, between the engine and the firewall (near the battery, at least for US market cars).
~Erik~

 

it's not just "called" an A/F sensor now, it's actually a different type of sensor...not interchangable).

~Erik~

i know they're not interchangeable, but they shouldn't call them air/fuel sensors, they dont measure fuel(HC) only oxygen (O2)

 

I believe in newer cars the upstream sensors are infact checking to see if there is any unburnt fuel in the exhaust. If there is, the ECM will adjust the fuel/air mix for combustion.

 

an oxygen sensor and an air/fuel sensor measure the same thing, but use a different material for their sensing device and the signal from them is on a totally different scale. This page is something I googled up real' quick, gives an overview of the A/F sensor.
They look nearly identical on the outside, but are totally different in their circuitry. An O2 sensor measures the difference in Oxygen in the atmosphere versus inside the exhaust flow...the A/F sensor does the same using a different system.

 

some newer cars have an actual gas analyzer instead of o2 sensors, but not these.

 

exactly what kind of sensor is used in this gas analyzer if not an O2 or A/F sensor?
~Erik~

 

its a 5 gas analyzer, same as used for emission testing.. measures O2,HC,CO,CO2,NOX

 

I'd really like to know what applications use this new amazing type of sensor. Sorry for my sceptacism, just without actual information, it's hard to get an idea of exactly what you're talking about.
~Erik~

 

I have a 2006 Grand Vitara lux ed. (2.7) and also have this problem. According to Advanced Auto, I am looking at the front O2 sensor. Does any one have any advice on what O2 sensor to get to replace the broken one? The ones I was quoted were a Bosch 15798 and a Denso 234-9032 for around 160 to over 200 a pop. AutoZone mentioned that you have to order 2 of them.

I noticed when I google O2 sensors for my GV, that I get some sites that have the sensors for $19 but doesn't include the wires? Will these work?

 

OK, read over the posts in this thread, mine in particular. The front sensor is not an O2 sensor, but an A/F sensor. Yes they are quire pricey, no you do NOT have to replace two at a time. Of course Autozone wants you to buy two...look who benifits: your car? not really. The store? yes. You don't have to get the sensor from Suzuki, but you do have to make sure it's the right kind...the dealership just happens to be a place to get them where they can guarantee that it's absolutely the right one.
~Erik~

 

unfortunately the sensor you have on your car has 6 wires. Frankly I don't know if the aftermarket has really gotten to where you can get this type of sensor without going from the dealer. There are a few aftermarket wideband O2 sensors for custom tuning an engine system, but I don't know if they're compatible. sorry to be not much help there...
~Erik~

 

I'm seeing genuine OE Sensors for your ride here...

Oxygen sensor, grand vitara, front 06-07 $128.92

OEM Suzuki Parts

For do it yourself install help, see...
http://www.suzuki-forums.com/1g-2001-2006-xl-7/28484-o2-sensor-replacement-guide.html

And...
http://www.suzuki-forums.com/2g-2007-xl7/29915-02-sensor-help.html

 

!
You are awesome! Thanks for the links!

 

Sorry for restarting an old thread but my 2006 JDM Escudo (2.7 v6) is coming up with the P2631 error but I have 3 questions

1) Why does the error reference the resistor (10) being faulting when it doesn't appear to be fitted in most applications? Does the error code now just mean duff sensor?

2) Can someone confirm back 2 is on the right side of the engine when looking from the drivers seat (regardless of RHD or LHD)? I am hoping so as thats much easier to get to.

3) Is the correct part a DENSO 234-9032? There are few online sellers but none that ship to NZ

Cheers

Ad

 

I have had the same code come up a couple of days ago.
Took it to Aussie Trax in Hervey Bay Qld and got Len to put it on the diagnostic as i have had the yellow engine light come on before on my 2001 Jimny and it was the O2 sensor,$35 for a new one, fitted it myself.
The Vitara (2006 2.7 V6) came up with P2631 code.
Len asked me when i had last changed the sparkplugs and i said NEVER (156000km) and i have owned it from new.
He cleared the code and suggested putting a new set in, i did, and so far so good.
Plugs were well worn and at low revs going around a corner would missfire (it's a manual).
Also when not started for a few weeks it would missfire when first starting then the yellow engine light would come on. after driving for a couple of days it would cycle and correct the code and the yellow light would go out.
If you have never changed Suzuki spark plugs before be sure to visit your local auto store and buy the correct plug spanner (it's a long narrow socket that fits on a 3/8 drive).
Plugs are around $7 each. Good Luck.

 

even tho this topics over 8 years old its good to know. Maybe start a new thread with the findings?
In Aussie Nickel plugs are about $7 if I'm not mistaken, change them every 10,000 kms max for best performance. If you want to get iridiums or rutheniums, rock auto have them for about $8 US each instead of the $45 rippco or superdear want to charge EACH!!! I got a set of 4 for my 2.4 landed in NZ tax and duty paid for $60 US as opposed to one for $45 NZD.

 

yep, BKR6E-11 are standard nickel plugs. same price here. The BKR6EIX-11 Iridiums are $35 each here at super dear
NGK Iridium IX Spark Plug - BKR6EIX-11

Next time toss a set of BKR6EIX-11 iridiums in it from rock auto, or even better the rutheniums, you will notice the difference.
Starting at top of the page i've linked below,, nickel, then platinum, then double platinum then iridium. Plain boring Nickel based at the top, best at the bottom so to speakscroll to the bottom for the rutheniums, just below the iridium range.

2006 SUZUKI GRAND VITARA 2.7L V6 Spark Plug | Shop Now at RockAuto

Ignition Parts and More for Your 2006 SUZUKI GRAND VITARA at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

yep, BKR6E-11 are standard nickel plugs. same price here. The BKR6EIX-11 Iridiums are $35 each here at super dear
NGK Iridium IX Spark Plug - BKR6EIX-11

Next time toss a set of BKR6EIX-11 iridiums in it from rock auto, or even better the rutheniums, you will notice the difference.
Starting at top of the page i've linked below,, nickel, then platinum, then double platinum then iridium. Plain boring Nickel based at the top, best at the bottom so to speakscroll to the bottom for the rutheniums, just below the iridium range.

2006 SUZUKI GRAND VITARA 2.7L V6 Spark Plug | Shop Now at RockAuto

Ignition Parts and More for Your 2006 SUZUKI GRAND VITARA at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

Mate I got 156000km out of the last set. I’m happy with that.

 

which is 146,000 kms more than you should have. I bet you have more power and better economy now