Check engine

[Ldub]

I think altitude plays a large part in this problem, I also believe being supercharged magnifies it.

I threw 3-5 cel's a day after we got out of the flat land, on the way to Moab.
No less than 4-5 a day while in Moab, & the same on the way home.
Since I've been back at "normal" altitude, no cel's at all.

Fortunately for my sanity , I can read & clear codes on the fly with my scan gauge. (from Tone)

[twistedsymphony]

This happened to me yesterday and then again today.

On my way to work yesterday it popped on while I was coming to a stop at a light about a mile from my house. I stopped at a convenience store, and then to work and it was on the whole time. fairly cool out, and the light probably came on before the engine was fully warm.

at lunch I went out to run an errand and it was on when I left work, but when I got back in the VX to drive back to work the light was off.

it was still off when I went home for the night, and I took another drive after work too. I was planning on stopping at an auto parts store to get the code read but figured there was no use...

This morning the light came on again, popped up again while I was coming to a stop less than a mile from my home, again very cool, engine not completely warm yet, a little rainy too.

Maybe I'll stop at the auto parts store even if the light goes back out..

[LittleBeast]

My solution that has been working for 4 years now?????






















Take out the CEL bulb!!!!! 112k miles and never had a real issue outside of wear and tear and stupid dealership tranny mistake.

[LittleBeast]

and while your taking the CEL bulb out you might as well take the ABS bulb out too, you are bound to have that one come on and off eventually, and really in the VX it is almost better without ABS. seriously

[Girlybot]

After checking both lights repeatedly with my mileage over 116k now, I've come to the conclusion that y'all are correct. If you don't hear anything squeaking, don't smell anything, pop the hood and all fluids are good... those lights are a trick to get you to come in and have checkups done. Screw it.

[taylorRichie]

I live at 4400 feet, had the truck at ~10,000 feet last weekend (uintahs), Wheeled with Todd Adams, and Justin (zeus) at 8,504 feet, 50,000 miles and never seen a light flicker.

Hope I don't see any anytime soon!!

Maybe it's acclimatized

[twistedsymphony]

unfortunately I live in NH and we have annual state inspections.

if the CEL is on it means that the ECU is throwing a code and the vehicle wont pass inspection as a result.

lucky me the CEL came on the day before I had my appointment

I had it checked at a local autoparts place: P0405 the EGR valve position sensor has low voltage... There's a guide on planetisuzoo on how to fix it for a trooper... you can get new and used replacement valves on ebay for about $50-$120 shipped...

the shop wanted $200 for the part plus $120 for 2 hours labor

that's an expensive CEL.

I've ordered an OBDII reader so I can scan my own codes (and reset them)... not to mention they're handy to have. and I'll try the DIY fix... failing that I'll buy a used one no way I'm paying over $300 for some emissions garbage that's killing my mileage anyway.