Where's the o2 sensor bank 1 on a 1999 suzuki grand vitara

which engine there are 3,

G16, J20 and H25. 4 bank , 4bang, v6

all 02s have a connector about 1 foot from sensor. all.

my guess is you have the SOB, v6, it is a pistol

it looks like the engineer was asked, see if you can make it near impossible to change ! then make it the only connector on the

car with the lock , working backwards ! HE WON.



here is 1 page, just for this, issue, only one on the web. btw.

http://www.fixkick.com/sensors/O2%20sensor/25L/25L-O2-H3LL.html



getting them off the hidden brackets, is no JOY

takes like an hour each.



enjoy

and do ask questions.

replace only the front, (unless smog man makes you do rear)

or you get P042x codes,.

that is because that number is WRONG
P0xxx is the format , yours is too long. P0 p1, OR P2.
use any modern, scan tool, to read the codes.
be sure to write them down more carefully.
ok i see your error, you added a 0 . (i think i got it)
there is no zero, P2 codes are factory codes.
p0 is federal codes,
and autozoned, is clueless to them, they;'d need and fsm on every car made to decode all P2 codes on all cars. a hopeless path.

why not just look them up in authoritative sources
like, SUZUKI or Alldata.com and avoid the ZONED.
answer, USA answers 06 GV
2631 is the oxygen sensor, failure,(or its wires damage, in all cases)
V6 engine code, 2.7Liter
bank 2, sensor one.
decoding that , bank 2 is the bank not on cylinder 1 side.
the right bank is bank2
its the top right (upstream) sensor is bad.
http://www.fixkick.com/sensors/O2%20sensor/25L/25L-O2-H3LL.html

right means from drivers perspective.

best path is here
the price 4 bucks
the book is here
https://suzukipitstopplus.com/Products/1045-2006-grand-vitara-service-manual.aspx

the FSM has your answer.

Front
B1 -B2
1 -- 2
3 -- 4
5 -- 6

bank 1 is left, bank 2 is right. per below, on all v6 by Suzuki

There is a full description here, most likely you have a faulty oxygen sensor.
P0135 Suzuki O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

sounds like the o2 heater is bad in the sensor itself

which engine,? v6?
Fuel TrimSystem Lean Bank 2
i have the factory manual. and car.
fuel trim (FSM) bank2 (right side) is 33% too high
that means its adding too much fuel , at a very lean bank 2.
it lists 8 reasons.
but can be distilled to, it is lean or the front right 0xy sensor is fibbing. (bad o2, or air leaks)
it shows 10 steps to find this, in 2 pages.
is P0175 present?
check for intake vacuum leaks and exhaust.
fuel pressure at spec?
all fuel injector tests bank 2
a weak MAF,or dirty. (bank 1 corrects but bank to fails)
ECT reading wrong.
O2 sensor front right.
it list fuel level (tank) as fibbing? not sure why?
FSM V1 pg 1a-90

Well, the upstream sensors are the same and the downstream are the same - so it takes two of each.
For the record you should never have to replace more than one or two sensors at one time. And trouble codes do not tell you the sensors have failed.

Change the O2 sensor. That code is for Bank 1 Sensor 1

before replacing cat converter replace o2 sensors, they go bad and give a false reading that cat efficiency is below threshold ,meaning converter is no good , i would replace o2 sensors and reset engine light and go from there,the o2 s are normaly the problem, unless you hear cat rattling, well good luck,

Bank one stands for the same side as the number 1 cylinder. Sensor 1 is the first sensor in the bank, (closest to the engine or upstream).
In most cases you will find it on the drivers side\left hand side of the engine and above the catalytic converter. Look for it on the lower portion of the exhaust manifold.

Bank one Cat is always on the side where # 1 cylinder is located. this is called bank one by Federal standardization rules, on OBD 2 Terminology and code definitions.