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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 05-06-2013, 02:17 AM   #1
itscoo2pyopants
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1b16 - exhaust camshaft vanos advance valve

I was driving this morning and my service engine soon light came on. Pulled these codes using my peake tool:

1b16 - exhaust camshaft vanos advance valve

B942 - unable to find the meaning of this one

No unusual sounds, drives ok. Does seem like it's missing some power. Does anyone have experience with these codes? I'm at 121k miles.

Some recent history on the vehicle; misfire approx 2k miles ago. Coil packs replaced, misfire fixed. Approx 1k miles ago throttle position sensor code EML light dsc light turned on under heavy acceleration. Lights reset when I restart the vehicle. Drives fine when I take it easy. I ordered the top sensor. Will replace this week. This morning these new codes popped up while driving normally. I did experience an occasional drop in idle rpm the past few months. Would only last for a couple seconds then would idle normally. Not sure if that's related. I have it parked until I can get more info.

Any help would be appreciated
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Old 05-06-2013, 02:28 AM   #2
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1b16 - exhaust camshaft vanos advance valve

Also forgot to mention; I did a valve adjustment approx 7500 miles ago. Replaced 9 shims. Took a peek at the tabs and they looked to be in great shape.
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Old 05-10-2013, 02:14 AM   #3
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1b16 - exhaust camshaft vanos advance valve

Replaced the vanos solenoid today and it cleared up the vanos code. Car seems to be running efficiently. No more drop in idle and the power is back stronger than ever.

Still having an issue with the throttle position sensor. I jumped on the freeway and opened her up, was losing traction in 2nd and 3rd, then the EML light and DSC light turned on and went into limp mode.

I replaced the top throttle position sensor, so it might be the one under the intake manifold. Does anyone know if it's the same sensor part in those locations? Saving the pedal for last
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Old 06-08-2013, 01:08 AM   #4
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my SES light turned on again this morning: 1b16 - exhaust camshaft vanos advance valve. any other ideas on what i can be? vehicle is running ok, havent noticed any difference in performance / unsual sounds. i have been driving it the past month (approx 2k miles) with no issues
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Old 06-15-2013, 01:25 AM   #5
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update: cleaned the solenoid valve body again and the code went away. 300 miles later and no problems..
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