Last week the CEL came on. When I got home I hooked my code reader to it and it said that there were no codes. I then held the clear code button and the code cleared. It took a week for the light to come on again and this time I went to Advanced Auto and had them hook their code reader to the CRD and it also said there were no codes. My code reader is an Inova brand, I don't know what kind of reader the store had but it was different than mine. Does anyone have any idea why I can't read the codes?

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2006 Liberty CRD Limited ordered new from factory. Born on date 2-2006 GDE
eco tune. Updated fuel filter head. No lift pump. Stock glow plugs.
Silverado 4x4
Corvette
1962 Ford Falcon
2005 John Deere 5425
1968 1\2 ton 4x4 short bed Chevy

May have been an enhanced code, which a standard OBD2 reader wouldn't understand - reader should be CAN-capable

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

you might try plugging it in, then turn the key to on, or vise verse combinations of both, I've found some code readers to be finicky and have to be plugged in at just the right time and order.

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http://www.Colorado4Wheel.com
"Its not about what you can DO with your Jeep, its about where you can GO with your Jeep."
Knowledgeable - But Caustic

I just returned the Actron CP9410 PocketScan Plus. After talking with tech support they said that diesels aren't supported. All I got was "Link Error". I've now ordered a Cen-tech 94169 from Harbor Freight per feedback from L.O.S.T.

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05 Liberty CRD, Airtex Lift Pump,ProVent, AMM, Racor 245R, ORM, Fujimoto,16x8 Moab Rims, 235/70R16 Goodyear Wrangler Silent Armor