Error Codes

MarkFT · 06-22-2015, 12:27 PM

I recently bought a low-mileage 2008 E90 M3. I knew before buying it that one of the O2 sensors needed replacing, and based on advice from this board, was going to replace both pre-cat sensors just to be safe.

Now, I was all ready to order the replacement O2s this morning (2 are sitting in my shopping cart at ECS Tuning) and I decided to check the codes once more this morning. And, it showed the P0132 for the O2 sensor AND a new code: P1628.

P1628 seems to be the code for the left-side throttle actuator. BUT, I haven't had any driveability issues (no limp mode, no reduced power or other usual symptoms), just a bit of rough idle on cold start. The car otherwise seems to run perfectly fine.

So, should I just replace the O2 sensors and see if that clears up the throttle actuator code or is it a pretty sure thing the throttle actuator is gone too?

NotoriousART · 06-22-2015, 12:42 PM

Usually when one throttle actuator goes, they both go so take a look at replacing both banks if it comes to that.

Flying Ace · 06-22-2015, 01:47 PM

yes, replace those actuators as well. Buy 2 b/c the other will go out shortly too.

06-22-2015, 12:27 PM	#1
MarkFT Second Lieutenant 128 Rep 266 Posts Drives: BMW M3 (G80) Join Date: Jul 2012 Location: Ontario iTrader: (5)	Error Codes - O2 sensor(s)? Throttle actuator? I recently bought a low-mileage 2008 E90 M3. I knew before buying it that one of the O2 sensors needed replacing, and based on advice from this board, was going to replace both pre-cat sensors just to be safe. Now, I was all ready to order the replacement O2s this morning (2 are sitting in my shopping cart at ECS Tuning) and I decided to check the codes once more this morning. And, it showed the P0132 for the O2 sensor AND a new code: P1628. P1628 seems to be the code for the left-side throttle actuator. BUT, I haven't had any driveability issues (no limp mode, no reduced power or other usual symptoms), just a bit of rough idle on cold start. The car otherwise seems to run perfectly fine. So, should I just replace the O2 sensors and see if that clears up the throttle actuator code or is it a pretty sure thing the throttle actuator is gone too? __________________ BMW M3 (G80) Gone: 911 GTS, BMW 1M, E46 M3, X7 M50i, Porsche Cayenne GTS, X5M, M2CS, Cayman GT4 (981), Alfa Giulia QV, Carrera T, F80 M3 CS, Focus RS, M2 (OG), 14 E63S AMG wagon, M3 & M4 (F8X), X5 (F15 & E70), 335IS, VW Golf R (MK7), Audi SQ5, Cayman (987), M3 (E90), M5 MT (F10), A4 Avant (B8), S4 (B8), RS4 (B7), VW GTIs (MK2 to MK6)
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06-22-2015, 12:42 PM	#2
NotoriousART Private 14 Rep 98 Posts Drives: e90 M3 Join Date: May 2015 Location: SF Bay Area iTrader: (0)	Usually when one throttle actuator goes, they both go so take a look at replacing both banks if it comes to that.
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06-22-2015, 01:47 PM	#3
Flying Ace Lieutenant General 4985 Rep 11,891 Posts Drives: G05 45e, 997.1 & 991.1 GT3s Join Date: Jul 2014 Location: SF, CA iTrader: (5)	yes, replace those actuators as well. Buy 2 b/c the other will go out shortly too. __________________ 22 Phytonic/Coffee X5 45e (CoVID-free) 08 Speed Yellow 911 GT3 Sharkwerks 12 AW/Cinnamon X5d Sports Pkg (retired) 14 AW/Beige M6GC ZCP, MPE, V2 steering wheel, vorsteiner (retired) 08 SSII/Black E90 M3 (retired)
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