Question about 2000 Isuzu Trooper
When doing an obd2 test. both p0401 and p0440 codes show up.
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Posted on Jan 02, 2017
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
Tips for a great answer:
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Oct 18, 2012 | 2000 Isuzu Trooper
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
i know this tool can clear your car code.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks
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