2001 BMW 325 Engine code

Tiny
MARYAUTOSALE
  • MEMBER
  • 2001 BMW 325
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 144,000 MILES
What is causing this code oxcb (203) lambda control limit bank 2
Thursday, January 29th, 2009 AT 2:28 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 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.
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Thursday, January 29th, 2009 AT 4:01 PM

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