03-02-2024, 11:59 AM | #1 |
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B58 - 118001 and 21A02D, car runs bad
Hi all,
Hoping for some help. My m140i (b58) recently developed a CEL. The car runs lumpy especially when cold. Even when warmed up, it hesitates a lot when cruising or giving throttle. Sometimes it even stalls and I have to restart the car. I had an error code for one of the lambda sensors which I changed but the issue is still there. I am left with the error codes in the picture. I googled these but couldn't really find anything specific. Has anyone experienced this or have any ideas on where to start with this? Thank you 👍
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2016 M140i
07 E90 335i: JB4, Trebila BEF, BMS DCI, VRSF DPs, Scoops, 19" CSL Reps, 5" ETS FMIC, VTT Inlets, BMS CP, HKS BOV, BMS Meth Injection - sold |
03-04-2024, 02:21 PM | #2 |
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Drives: 2016 EB 340i
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The 21A02D is software “glitch” that can only be fixed via an ISTA update. I got mine done for $500-600 at a dealer. They locked my DME afterwards.
https://static.nhtsa.gov/odi/tsbs/20...38380-9999.pdf |
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03-04-2024, 04:57 PM | #5 | |
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Quote:
Another possible root cause: intake vanos solenoid actuator needs to be examined and replaced. |
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Aldor2788.00 |
03-05-2024, 11:41 PM | #6 |
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Drives: 2016 EB 340i
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Taking it to the dealer was my last ditch effort. I replaced both vanos solenoids with the hope it would fix the issue. It didn't, the exhaust side was a pita to remove and install. The intake side was cake.
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04-29-2024, 03:36 PM | #7 |
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Sorry for the late reply. Been trying to chase the issue.
Car has a map and downpipes but was done before I purchased. I will be changing the vanos actuators shortly but I'm not so sure it's connected. Would that really result in fuel too lean? I am considering the software update however not keen on it wiping my map and possibly locking the dme... |
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