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BMW E53 X5 2000 and later (Sport Activity Vehicle) check engine light o2 sensor


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Last Post: Aug 4, 2012 8:23 PM Last Post By: rioman
bodytech

Posts: 9
Registered: 12/28/07
check engine light o2 sensor
Posted: Dec 8, 2009 11:28 PM
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I have a 2001 BMW X5. For a state inspection I got an error code o2 sensor not ready, Bank 1 Sensor 2. We changed both sensors but the error code remains the same. Help. Need sticker ASAP.
Charlie

Posts: 4,776
Registered: 12/09/03
Re: check engine light o2 sensor
Posted: Dec 9, 2009 8:40 AM   in response to: bodytech in response to: bodytech
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The sensor not ready could be caused by a number of things. I would start by checking the o2 signal at the dme with the engine warmed up (backprobe, all connectors connected).
Bimertek

Posts: 19
Registered: 01/06/08
Re: check engine light o2 sensor
Posted: Dec 11, 2009 2:40 PM   in response to: bodytech in response to: bodytech
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after replacing the sensors did you clear the faults?You need to drive the vehicle on the parkway and not reving it pass 3000 rpms for about 10miles and then recheck the readiness status of the sensors.Are you in New York?
bodytech

Posts: 9
Registered: 12/28/07
Re: check engine light o2 sensor
Posted: Dec 11, 2009 4:16 PM   in response to: Bimertek in response to: Bimertek
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I Cleared faults, drove it normal and at 46.6 miles the check engine light came on sensor not ready
bodytech

Posts: 9
Registered: 12/28/07
Re: check engine light o2 sensor
Posted: Dec 11, 2009 4:17 PM   in response to: bodytech in response to: bodytech
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I live in Mass.
Bimertek

Posts: 19
Registered: 01/06/08
Re: check engine light o2 sensor
Posted: Dec 13, 2009 11:55 AM   in response to: bodytech in response to: bodytech
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what eng does the vehicle have? 6 or 8. fuse 4 powers the o2 sensors check for 12 volts at the sensors.What faults are you retrieving from the eng control module?

Edited by: Bimatech on Dec 13, 2009 12:17 PM
bodytech

Posts: 9
Registered: 12/28/07
Re: check engine light o2 sensor
Posted: Dec 14, 2009 12:02 PM   in response to: Bimertek in response to: Bimertek
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it is a 2001 X5 3.0i. V6. Fuse is OK. The fault was Bank1, sensor 2, not ready. We change them again from the BMW dealer and it starts up to 0.05 then it drops to 0.00.
Bimertek

Posts: 19
Registered: 01/06/08
Re: check engine light o2 sensor
Posted: Dec 14, 2009 12:24 PM   in response to: bodytech in response to: bodytech
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Try driving the car at a steady speed with out goin over 3000 rpms .You should clear the faults and adaptation values if possible.Check the wiring from DME to sensor also check for corrosion at connectors especialy the DME.I you can you should try reprogramming the DME.
rioman

Posts: 1
Registered: 08/04/12
Re: check engine light o2 sensor
Posted: Aug 4, 2012 8:23 PM   in response to: Bimertek in response to: Bimertek
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On the same BMW, where is bank 1 sensor 2 located?

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