2001 BMW 325 Code trouble shooting

2001 BMW 325
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MARYAUTOSALE
  • MEMBER
  • 2 POSTS
Engine Cooling problem
2001 BMW 325 6 cyl Two Wheel Drive 145000 miles

What does this code mean?
What may be causing it?
This the first time I use the sistem I am skeptical to donate at this point I will pay if I get the how I need
Oxcb (203) lambda control limit bank 2n
Jan 29, 2009 at 7:44 AM
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DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
It is possible the code is set for an oxygen sensor that is getting old and is slowing down in it's response time. The sensors are to be replaced as maintenance items at 100k miles, they should have been replaced and if so with the OEM Bosch sensor.
Jan 29, 2009 at 8:03 AM
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