Question about 2003 BMW X5
P1168 ENGINE CODE??? WHAT CAN BE???
Post catalyst fuel trim system correction valve above threshold (bank 1) N62 Engine (4.6/4.8)
Posted on May 13, 2017
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Posted on Jan 02, 2017
There is no one fix works on this O2 sensor code
P0170 - Fuel Trim Malfunction Bank 1
Possible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
Posted on Jun 27, 2012
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