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X3 engine fault codes 3FF0, 4242 & 4212

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X3 engine fault codes 3FF0, 4242 & 4212

Postby abalone » Tue, 07 Dec 2010 09:18:39 UTC

Hi there, I have an X3 2.0ltr, 56 plate with 45k miles on the clock, I have an intermittent engine light that comes on and off every 48 hours, I've taken it to a garage who read the codes 3FF0, 4242 and 4212 but they couldn't shed any light on what they meant - can anyone help please?
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Re: X3 engine fault codes 3FF0, 4242 & 4212

Postby TheEnd » Tue, 07 Dec 2010 15:10:40 UTC

Remember to mention the diesel aspect!

3FF0 is your Airflow meter, which means that it's getting an unexpected signal from the AFM, not just as simple as the AFM is damaged/not working.
Check for leaks in the hoses

4242 and 4212 are your glowplugs on cyls 4 and 1 respectively.
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Re: X3 engine fault codes 3FF0, 4242 & 4212

Postby abalone » Thu, 09 Dec 2010 10:58:06 UTC

Thank you - will get it checked out at the garage.
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Re: X3 engine fault codes 3FF0, 4242 & 4212

Postby big d » Sun, 19 Dec 2010 22:01:02 UTC

Hi
I had the same codes on my 2.0 d x3 80k , main dealer advised de coke just before turbo gave up.
turbo replaced, decoke was c/out and the egr valve actuator was at fault. (all warranty work) .
anyway my point is that the codes may be a consequence of a different fault.
regards
dave
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Re: X3 engine fault codes 3FF0, 4242 & 4212

Postby Dave_530d » Tue, 04 Jan 2011 16:35:35 UTC

Can someone tell me where to find the diagnostic port on an X3 2.0d (dec2004 build date) ?

I expect its either in the footwell (covered or hidden ???) or somewhere under the bonnet on the passenger side.

I'd be grateful for any assistance and/or images (preferably of the diagnostic port, and not yer holiday snaps [:D] ).

Cheers, Dave.
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Re: X3 engine fault codes 3FF0, 4242 & 4212

Postby Ranger 6 » Wed, 05 Jan 2011 15:50:37 UTC

I think mine is next to the bonnet release Dave.
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Re: X3 engine fault codes 3FF0, 4242 & 4212

Postby Dave_530d » Wed, 05 Jan 2011 17:08:28 UTC

Got it, cheers Richard.

I had looked behind the flap before but was misled by the inner cover (looks like it has 2 resistors on front of it). Thats what happens when your not fully concious. Pulled off cover and there it was :roll: .

Had a check for fault codes (re- my naff starting in sub-zero conditions), but none present. Guess its off to the garage with it at some point.

Dave.
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