Question about 2000 Isuzu Trooper

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What are codes p0401 and p0300 mean on a 2000 isuzu trooper

The service engine light is on and on my code scanner i get codes p0401 and p0300 what do these codes mean ? its a 2000 isuzu trooper 3.5L

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  • Isuzu Master
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P0401 is EGR problem
P0300 is a cylinder 3 misfire.
Replace EGR valve and do a full tune-up.

Posted on Mar 19, 2014

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Posted on Jan 02, 2017

redbeard00
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SOURCE: 2000 isuzu trooper: OBD-II Trouble Code: P0401 Insufficient EGR F

Your SUV is really giving you a hard time, lol. Sorry but I've had those days too.
I would try to check if you have blocked EGR passages. If ok check for restricted MAP sensor vacuum hose/passage or restricted exhaust. I know you replaced the CAT but if the muffler is blocked then there would still be a restriction. Also check the wiring and connection to the MAP sensor.

Posted on Apr 28, 2010

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I have 01 trooper replaced gas cap now check engine light off, but I have a p0300 code will it pass smog.?.


Many states will not pass a vehicle with a check engine light.

The P03000 code you have has little to do with the gas cap, rather it is a random misfire code. read more about this code and possible fixes in the link below. Good luck!

http://www.obd-codes.com/p0300

Jul 24, 2015 | 2001 Isuzu Trooper

1 Answer

Stalls in gear, shudders while accelerating.. Cannot Resolve.


PO300 code means miss fire on the cylinders, That is usually caused buy bad spark plugs end wires,PO401 code means a problem with the EGR ,Valve Sticking.

Oct 18, 2012 | 2000 Isuzu Trooper

1 Answer

My 2000 Isuzu Trooper runs well. My problem is once I get above 2000 RPM's my engine light flashes.


That means there is a big problem whenever it flashes. You need to get it in and get the code asap. When it flashes, they call that a major issue. Be careful and go asap. Autozone checks for free but you probably need a mechanic.

Feb 17, 2011 | 2000 Isuzu Trooper

2 Answers

Have a 1996 Isuzu Trooper LS, check engine light came on so I checked it with a scanner and it said generic code PO 133, which is a slow response, or slow switching so I put an oxygen sensor on, check...


I had the same thing. It is something to do with emissions apparently. I was told to check the fuel cap ! I put some silicone on the seal, cleaned it up, put it back on with the correct number of clicks and after about 15 minutes of driving, the Check Engine light stayed off.

Jul 21, 2010 | 1996 Isuzu Trooper

1 Answer

2000 isuzu trooper: OBD-II Trouble Code: P0401 Insufficient EGR F


Your SUV is really giving you a hard time, lol. Sorry but I've had those days too.
I would try to check if you have blocked EGR passages. If ok check for restricted MAP sensor vacuum hose/passage or restricted exhaust. I know you replaced the CAT but if the muffler is blocked then there would still be a restriction. Also check the wiring and connection to the MAP sensor.

Apr 28, 2010 | 2000 Isuzu Trooper

3 Answers

Where is the diagnostic plug to get codes from check engine light


The 1990 Isuzu Trooper with a 2.8L GM engine, the diagnostic connector is located directly beneath the coin try in the front of your center console!!
Along with the typical OBD connector is two wires with a spade connector on each, one female and one male. Connect the two wires to display the diagnostic codes on your check engine lamp on the instrument cluster panel.
As for finding out your codes meanings, go to your nearest public library and locate a 1990 Trooper service manual.
 

Nov 24, 2009 | 1990 Isuzu Trooper

1 Answer

2000 trooper jerks from a start no trans codes appear on scanner


I also had the same problem with my 2000 trooper.... the problem is u are low on fluid..... the reason u are low because your tranmission is leaking ..... it doesn't take must

Jan 03, 2009 | 2000 Isuzu Trooper

2 Answers

My 2000 Isuzu Trooper needs a catalytic converter.


yes they have 2 cataletic convertors, one each bank
there is EGR codes, but only front O2 sensor codes and fuel trim codes no CAT codes
what were the scanner codes or flash codes i can work with both for helpful info
you can read codes by bridging pins 5 & 6 with ignition in on position engine not running


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Jul 16, 2008 | 2000 Isuzu Trooper

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