My check engine went on so I stopped by a local garage for a scan. It showed code 1265. The mechanic's database did not have a cause for that code in his database. He turned the code off.

Does anyone of all of the CRD codes and what code 1265 means?

You have a glow plug problem.
Look in the CRD Tech section for the list of coded

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

P1265 is a failed #3 glow plug. Glow plug failures are more common during the summer months. This is counter intuitive, but there is an underlying reason.

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Providers of wholly developed aftermarket solutions for the KJ CRD.
(248) 977 - 9531

My engine light came on again so hopes that the first code is merely a fluke have vanished. Time to address the problem

Found the codes. 1265 is glow plug #3 control circuit low. 1264 says glow plug #3 circuit is open.

Maybe I am splitting hairs, but how does one conclude that "circuit low" positively confirms the glow plug is bad? If the glow plug is bad wouldn't the circuit be open? Is there a possibility that this may be a control module problem rather than a glow plug problem?

If it can be determined that the glow plug is bad, and reading past posts, can I reasonably estimate a repair at $40 for the glow plug, and an hour of labor?

CRD has 73k miles so i will try to plead a warranty case, but I doubt that will work.

Any help is appreciated!

You meter the glow plugs with a OHM meter. I think your looking for 6 ohms and more or a short indicates a problem.
I believe there are instructions in the FSM. That stands for Factory Service Manual

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

Should be 0.6 ohm for a good one. Some cheap meters can't read that low though.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

ColoradoCRD,

Our documentation shows P1265 to be "not plausible", ie. very high resistance, P1264 is a "min" fault, never seen that code pop up in real life. If the resistance is 1.2ohms or lower it can be considered good, .6 to .7 is from factory, but there is some variablity based on plug temperature and meter quality. If failed it typically shows 200+ ohms.

_________________
Providers of wholly developed aftermarket solutions for the KJ CRD.
(248) 977 - 9531