Question about 2003 Toyota Sequoia

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WHAT WOULD CAUSE THE WHOLE RIGHT BANK TO LOSE SPARK NOT GETTING SIGNAL FROM COMP. ACCORDING TO SCAN TOOL

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What are the exact OBD2 electronic engine control fault codes that were received when the system was scanned, very important to know these codes to give you any useful help.

Posted on Aug 24, 2010

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I have a 2009 oyota matrix turns over fine but wont start


code p 2238 refers to heated oxygen sensor(HO2S) 1 bank 1 positive current control --circuit low===causes --wiring short to ground --HO2S
also refers to oxygen sensor (O2) 1 bank 1 -positive current control --circuit ;ow==causes --wiring short to ground ---O2S
also refers to heated oxygen sensor 1 bank 1 ---implausible signal===causes --wiring short to positive, short to ground --HO2S---ECM
at this point I suggest changing the heated oxygen sensor in bank 1 exhaust before the cat converter using the specialist tool as the sensor wires are delicate and subject to easy damage

Feb 15, 2017 | Cars & Trucks

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Drivers side has spark and fuel when using starter. But no fuel / spark when running on the passenger side cylinders? None of the drivers side cylinders fire!


are yous saying engine runs on 3 cylinders, (sure dead slow)?
great facts, so few post have actual facts or tests
but what engine, it's engine issues, which one?
must be v6, (left right bank)
but is it single or twin cam 24valves?
check all fuses first. (always)

lets see... one side has no spark, so did you scan he PCM while cranking for P03xx codes DTC errors. it will show them if you crank for 5 full seconds, and release the key , 90% of time.
and is a KEY fact in diagnosis, no need to fix cars like 1995 and older here. we use scan tools and win,.

left side has spark and fuel but is dead, so its flooding on that side.
right bank has no spark and no fuel.
you meant both sides dont fire. and engine does not run at all.
so what is wrong.
well I check spark first. is the timing good? if not the cam belt slipped. as all do , ignored.
5 min check and bam , OMG timings way off....
or check compression first. i do on all old cars.
for 2 reasons.
1:if compression is way off, the cam belt slipped.
2: if uneven , (done right) you go , gee, is this old car worth a rebuild? 13 years old, IMO , it is. but isuzu parts. hard to get?

do compression on #1 clylinder (or 3) first. if way off. bingo.
5 min work done WOT, wide open throttle.
bingo

line up
3.2 L 6VD1 SOHC V6
3.2 L 6VD1W DOHC V6 (w = 24v)
3.5 L 6VE1 DOHC V6

which one????????

knowing engine, tells the mech, what spark system is there and which of 2 fuel systems used.
see?
does engine have 1 coil pack with 6 lugs, or 6 cop coil packs.
see?

if compression is ok.
and one bank is dry.
that means the injectors are dead on one side.
and that means the PCM is seeing bad CMP sensor data.
some CMP can do that. but no engine stated.
SOme CMP sends camp pulses for all cylinders can can fail on one bank.
but if the cam belt slipped, some PCM go nuts with crazy CMP pulses.
let me explain if you were a PCM and the cam and crank signals.
are in contradiction, do you inject or not? (pretend that)
some do, some dont other guess wrong, or go goofy.

the spark and injections are all timed.
that is why I always check spark timing First.
a 5min job.
the new cars have no spark timing adjustments
and many think that is excuse to throw the tool away
nothing is so far from the truth...
learn this. and win...

Jun 18, 2015 | 2002 Isuzu Trooper

1 Answer

I have 1999 grand jeep cheroke v6 with 180,000


USA CAR? why not say that.?
a tune up is 1st not last. for 100 years.
skipping that 60k service or 100k, is the cause.
you have misfire. hot and cold
id have to do 3 to 10 tests to find it. but that be after a tuneup.
why delay doing that. so odd......
you can not burn fuel right with no or weak spark, so.....

this is called misfire, (hot and cold, no hot actual temp stated)
our USA cars have OBD2, PCM.
so why not connect a scan tool to the OBD2 16pin port, and scan it.
see all those errors, BINGO !!!!!
that be 2nd after a real tuneup.

p0300s are random misfire.
and P0301 is cylinder 1 misfiring.... like that...see?
me knowing the DTC errors, makes troubleshooting impossible.

here are some rand come causes of all misfiring.
  • bad compression 1 or more cylinders, (not at spec, psi)
  • Bad spark 1 or more (tuneup time full )
  • Bad fueling. (too weak or too much 1 or more cyl.)
  • injectors leaking. 1 or more...
  • injectors clogged in whole or part. 1 or more...
  • intake air leaks , cause lean misfire.
  • water thermostat stuck open, and never reaches 180F min.
  • ECT lies, and water is 180f but reads say 140 on scan tool.
  • lots of other thinks, all seen on scan tool, sensors inputs.....
end guessing list. the first has 50 causes. bad engine.
so guessing is futile.
we do simple tests, with simple tools and let the EVIDENCE speak.

do you want us to guess, or show the tests, and the order.
you call,
we can not guess what you are asking unless you say so.
here is one example
---------------------------------<Eg>--------------------------
hello my car misfires. EFI engine.,
i have nyo tools , and no books and do not want to buy any.
nor learn.
what is wrong.? with my engine.?
answer, get it serviced, or do the tuneup and pray.
listing the 50 causes, is futile.

Sep 24, 2014 | 1999 Jeep Grand Cherokee

2 Answers

I have a toyota corolla 2003 and it did not pass the emission test due to a sensor with code P0175


so get it fixed? no engine size posted. so ???? impossible to be accurate.
or DIY, you have tools? and skills. to do that.
it means the Oxygen sensor has issues.
means bank 2 is stuck rich
bank 2 means car is V6. bank 2 means bank with #2 cylinder loc.

for much better, reasons and test. see here

http://www.scantool.net/software/alldata-diy-1-month-subscription.html

is this the only DTC code.??? no others, and did you use a scan tool
that can read all Toy codes, like P1xxx ? codes factory codes.
if not you missed the boat.
my wild guess. (i do tests in real world)
bank 2 is rich.
due to what?
1: misfiring, ever do a tune up? see fouled spark plugs bank 2, look.
2: injector leaking.

there are lost of tests, im not going to list them all.
but it takes tools and time.
compression at spec. bank 2?
OIL FOULED SPARK PLUGS, there, oops.
or bad COP on bank 2,




Jan 14, 2014 | 2003 Toyota Corolla

1 Answer

Misfiring on 3 4 6 done tryed fuel presure 65 coil modlue cap rotor wires spark plugs injectors pulled dis. shaft under rotor was white from misfiring


What you need to do is take the front o2 sensor that is in the bank that is misfiring and swap it with the other front bank.Then see if the misfire changes to the other bank.If it does then replace the o2 sensor.If not then use some brake cleaner and check the intake gaskets while the vehicle is running.If you have a scan tool then you can monitor it with the fuel trim values,especially on the right bank.Which is on the passengers side.This is for the 5.3 motor only.These are known for intake gaskets and o2 sensors causing this problem.Let me know what motor you have.Hope this helps.Good luck.

Sep 23, 2010 | 1999 Chevrolet K1500

3 Answers

Does PO0430 mean anything other than replace the catalytic conver


Yes the front O2 sensor(the one before the cat) could be lazy and cause this also.

May 25, 2009 | 1996 Mercury Sable

1 Answer

1991 honda accord exr


Since the 91 model is obd1 there is no scan tool that can be hook up to it,but on the right kickpanel there is a two pin connector you can jump with a simple tool like a paper clip with the key on and the engine not running and this will cause the the mil to blink your code you will get a two different blinks a long one and a short one you combine both to get the code.example two long ones followed by one short is a code 21.

Mar 18, 2009 | 1991 Honda Accord

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