P0276 and P1729 codes

natefank · 02-16-2019, 12:25 PM

I posted on the Facebook group but I know some people aren't over there so I'm posting here as well. I was cruising down the freeway last night when I got the engine malfunction light, started running rough and less power. Limped it home and pulled those 2 codes, sorry my computer that had ISTA took a dump awhile ago, so I just have a generic scanner. The car is a 2011 335d with 160k on it. Anyone have any solutions for these codes?

Nadir Point · 02-16-2019, 12:37 PM

With that many miles on it, either CBU and/or fuel quality has probably finished off at least 1 injector. I'd OHM-out #6 to start with and go from there. Probably end up replacing them all as wear items, just a suggestion.

natefank · 02-16-2019, 01:03 PM

I've had the CBU cleaned at 110k, and due to the shop not knowing what they were doing, I've had 3 injectors replaced and the rest of them gone through and tested. I'll check the OHMs on it this weekend and see what it shows. I'll have to check my paperwork and see which ones were replaced and which ones weren't.

02-16-2019, 12:25 PM	#1
natefank Private First Class 8 Rep 106 Posts Drives: 335d Join Date: Mar 2014 Location: Santa Cruz, CA iTrader: (0)	P0276 and P1729 codes I posted on the Facebook group but I know some people aren't over there so I'm posting here as well. I was cruising down the freeway last night when I got the engine malfunction light, started running rough and less power. Limped it home and pulled those 2 codes, sorry my computer that had ISTA took a dump awhile ago, so I just have a generic scanner. The car is a 2011 335d with 160k on it. Anyone have any solutions for these codes?
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02-16-2019, 12:37 PM	#2
Nadir Point Lieutenant 103 Rep 580 Posts Drives: Diesel Join Date: Dec 2015 Location: CO iTrader: (0)	With that many miles on it, either CBU and/or fuel quality has probably finished off at least 1 injector. I'd OHM-out #6 to start with and go from there. Probably end up replacing them all as wear items, just a suggestion.
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02-16-2019, 01:03 PM	#3
natefank Private First Class 8 Rep 106 Posts Drives: 335d Join Date: Mar 2014 Location: Santa Cruz, CA iTrader: (0)	I've had the CBU cleaned at 110k, and due to the shop not knowing what they were doing, I've had 3 injectors replaced and the rest of them gone through and tested. I'll check the OHMs on it this weekend and see what it shows. I'll have to check my paperwork and see which ones were replaced and which ones weren't.
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