PO266 code - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 03-03-2014, 05:20 PM Thread Starter
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PO266 code

I started my truck yesterday morning and it immediately started idli g rough. I never saw any smoke coming out of the pipe but it continued to do this for about 10 minutes. I ran the diagnostics with my minimax and it said PO266 #2cylinder contribution/balance. I cleared the code but it continued to idle rough. I finally had my stepson get in the cab and load the engine up by putting it in gear and holding the rpms up with his foot on the brake and it did clear itself up. I did some research on here and some people have said it can be an injector problem. Has anyone had this happen and the injector clean itself? They generally don't do that so was hoping someone on here has some experience with this issue.
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post #2 of 2 Old 03-03-2014, 06:55 PM
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I would get it hooked up to IDS, I had the exact same code the other day. Mine stumbled at idle for 2-4 seconds and that code popped. Called my mechanic, he said it's most likely gonna need a new injector. I will know more tomorrow.

2008 F350 RCLB, 2011 bed and wheels
SCT tuned, 4" straight pipe exhaust
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