Question about 2002 Isuzu Trooper

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2002 Isuzu Trooper reset check engine light how

HOw to clear CEL lamp and DTC errors.

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there are 4 ways. (on all usa cars 1996 to now)
1: push reset on any scan tool here. all OBD2 tools in usa do it.
2: pull the memory fuse, on the ECU/PCM
3: pull battery neg lug. for 5min,. turn key on can lower time here..
what you are doing is letting the memory bank NVRAM caps discharge, to below 0.7v. the ecu has a memory wire... 12v.

4: drive them off, per the SM rules, each DTC has a rule on this
dont look as some take an hour, or takes 4 cold starts. or. or or.

now if you pull the neg lug, watch out, some things my bet unhappy,
1: lost radio stations. or nav settings. etc.
2: lost learn modes of sensors on car.
3: lost transmission learn modes.

if you reset the ECU, and the CEL comes back that means
its REAL a real hard set error, (things break on all cars made)
so get if fixed, that is what the lamp means, get it serviced.
or scan it and read the SM on each DTC set. but I bet you dont know how to do that, or use tools to do what the SM tells you.
but I could be wrong, but most folks 99.9 just get it serviced.

SM- service manual or FSM, factory SM.

Posted on Dec 02, 2016

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You can reset any vehicle code by taking off the negative (black) lead off from battery for 30 minutes. make sure it don't touch anything else. if you have light on go to your local auto parts place and have code checked before hand. resetting light will also reset all codes and delete them. why is the light on?

Posted on Dec 01, 2016


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Posted on Jan 02, 2017

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Trooper starts from cold no problem when engine warm engine management light comes on and is difficult to start engine turns for a long tme before fires up

no year, no engine stated, i4 or v6?
the cause is many hard starts
the lamp glowing means get car serviced
or scan it yourself and read the service book on that error or errors, and do the tests stated there.

as far as poor started
THIS is called misfire.
and has 50 causes

#1 is never getting a full tuneup this decade.
ill not list the nifty fifty,
in a shop , they use tools
to conduct tests (engine/spark/fueling)
saving the 50 guesses.

hot starts fail or weak
engine not really hot 180f + themostat bad.
or ECT reads 140 when its 180f actual,ECT bad.
causes flooding that. and hard hot starts.
scan the ECT when hot. first.

Feb 18, 2017 | Isuzu Trooper Cars & Trucks

1 Answer

Isuzu 2.petrol van.engine lite flashing on dashboard.why?

three posts, now, all on a car we dont have in USA.
why not add to one post ?
this time the CEL glows.
that means scan it.
or if no tools
means get car serviced. 1988 to now.
all cars. the lamp literately means
the engine brains sees gross errors.
and is reporting them in the form of DTC errors.
it means scan it to see them.
or get it fixed.

Dec 05, 2016 | Isuzu Cars & Trucks

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I have a 1997 Geo prizm cannot clear check engine light after repairs

Have OBD codes read and be sure all corrective action has been taken.

Oct 26, 2016 | 1997 Geo Prizm

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How do i reset maintenance require light on a 2002 honda civic

Take it to a mechanic and ask them to reset the ODC, or purchase an ODC reader that has reset capabilities.

Apr 21, 2015 | 2002 Honda Civic

1 Answer

Reset the check engine alarm on isuzu KB 250

DTC errors, CEL glows or not. (PCM errors) etc.
wow no year, now that is a challenge. nor country, 10x more hard.
1 answer, posted 100s of times 10,million times, world wide.
same as all cars.
1:pull battery neg lug, for 5min, (see radio die and NAV , after)
2: pull all PCM fuses,bam, it forgets
3:connect any scan tool, and press reset
4: correct error and drive them off, (the do clear,but can take like forever on some...)
#1 causes big time havoc on new cars.

Dec 25, 2014 | Isuzu Cars & Trucks

1 Answer

What do dashboard lights mean

you meant warning lamps. right? not parking lamps.
every year they add more. my newer car has like 100.
each maker uses different lamps. (icons.)
making generic answers impossible ,except the obvious.
CEL , check engine light, or SES. service engine soon.
Oil lamp... low oil pressure do not run engine.
charge lamp, battery will die soon (go discharged and car stalls)

you lost the operators guide, all lamps are explained in every car made in the glove box manual.
get one.

or use this random page.

this is a grand attempt at the generic, its very good.

it means what the book says it means.
end story. also has the facts on this car.

Aug 29, 2014 | 1993 Isuzu Trooper

1 Answer

Why does after short trip engine starts misfiring and jerking ?

the dash has a CEL lamp does it glow when misfiring?
that means scan it.
scan it for P03xx DTC errors, that tells you which coil is bad,
or wire, or cylinder is bad.
SCAN IT. that means do so when it misfires, not 2 hours later when not misfiring, as they self clear.

Jul 09, 2014 | 2004 Suzuki XL-7

1 Answer

What is an ecm code?

My guess is you are hearing rumors.
and now want to know what
a check engine light means, (means get it serviced)
the book on the car covers all this is you like to read.
the book is a FSM, factory service manual or SM.
i close match is at Mitchells' DIY dot com, google it.
all mech, use it. so not have to memorize , 1million DTC errors.

it the CEL lamp means get car serviced, or learn to scan it and read the book. each error is covered in the book, if you can read.

Jun 12, 2014 | Isuzu Rodeo Cars & Trucks

1 Answer

2000 4WD isuzu trooper v6 3.5l DOHC(Automatic tranny) is lurching

if your dorky mech didnt drive your car, , ignore him.
my guess you didnt pay him and all this is BS , ?

asking for folks to guess is silly and at 12,000 miles away .
but its ok here, it's like PAR here,
endless , wild guessing. what else can you expect here/?>?
do not fix cars by statics, ever, your car don't read those, so does as it pleases, called ENTROPY./fate,luck or natural wear/tear., effects.
all cars do that. so avoid the Mr. Guess.

The CEL lamp is only for smog, it's not a diagnosis tool unless its stuck on. see?
you cant fix cars lacking a Scan tool doing so is silly.
why try?
learn fact one, many errors, will clear as you drive car,
and say engine misfires. then you got to autozoned and its now cleared. a waste of it time, no?
finding most problems, takes driving and scanning at the same time.

seems your engine is 6ve1 engine, the last one made sold in usa.
the new gen. V6 , DOHC engine.,
ever get a new cam belt, ever? or going for the world record.
over 60k miles

last you said
Online points

what does that mean,> online, (sure web) but
did you tell others real DTC errors and ask
or just tell them CEL glows what are the possible errors
my car has over 100 possible, why guess that?
be sillly
only your DTC mater, your and your s alone,
post them or get now here. fast.

now we do MR. LURCH
there are 2 guy here (bad guys)


the trans can lurch 2 ways.
slips. or flares, (bad trans)
or can shift late or early (too) and lurch.

misfire and scanned now can set any P03xx codes,
needs to be scanned failing to get the TRUTH.
eg: P0300 missed but now shows P0301 only, misses that truth.

Mar 08, 2017 | 2000 Isuzu Trooper

2 Answers

Isuzu Trooper Diesel DTC problem

bridge pins 5 & 6 in DLC connector
turn ignition to on position
count flashes from check engine light
connector behind front centre console right side


Sep 25, 2008 | 1999 Isuzu Trooper

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