Join Now
International Automotive Technicians Network

P0173 Diagnostic Trouble Code Discussion for August 2005

Fuel Trim Lean Or Rich (Bank 2)


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0173
Help Request Posted
1998 BMW 740iL 4.4L MIL Lamp on VIN: WBAGJ8324W
P0173: Fuel Trim Bank 2. Any Bimmer Pro's out there? This code and info tells me this car has a vacuum leak. Spent many hours looking, cannot find it. I don't think this means anything but there is louder than usual hissing from the intake manifold, louder in gear (D or R). car runs p...
August 16, 2005
1999 Mercedes-Benz E320 3.2L MIL Lamp on VIN: WDBJF65H9X
P0173: Bank 2 self adaptation at limit. This Benz runs normally but continues to set the two codes listed. There are no vac or unmeasured air leaks that can be found. The fuel pressure is in spec. The O2 sensors are working correctly. When the codes set the fuel trim readings are -100%. The MAF seno...
August 16, 2005
1999 BMW 323i 2.5L Surge, Misfire, MIL Lamp on VIN: WBAAM3330X
P0173: bank 2 fuel trim. ... cracks in pcv tube, replaced, test drove and car seemed fine. customer came to pickup and at idle was missing and now set trouble code p0173. i suspect a vacuum leak in the area of the throttle body. if you spray carburetor ...
August 18, 2005
1999 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA29G4X
P0173: bank 2 fuel trim malfunction. Got this in the shop today with these 2 codes,(po170,po173) looked for vacum leak and can't see any (do hear like there is something at the rear of engine but can not confirm). Was wondering if anyone has had a problem like this? idle sound good not to fast.Lo...
August 23, 2005
1998 BMW 740iL 4.4L MIL Lamp on VIN: WBAGJ8324W
P0173: Fuel Trim Bank 2. Any Bimmer Pro's out there? This code and info tells me this car has a vacuum leak. Spent many hours looking, cannot find it. I don't think this means anything but there is louder than usual hissing from the intake manifold, louder in gear (D or R). car runs p...
August 16, 2005
1999 Mercedes-Benz E320 3.2L MIL Lamp on VIN: WDBJF65H9X
P0173: Bank 2 self adaptation at limit. This Benz runs normally but continues to set the two codes listed. There are no vac or unmeasured air leaks that can be found. The fuel pressure is in spec. The O2 sensors are working correctly. When the codes set the fuel trim readings are -100%. The MAF seno...
August 16, 2005
1999 BMW 323i 2.5L Surge, Misfire, MIL Lamp on VIN: WBAAM3330X
P0173: bank 2 fuel trim. ... cracks in pcv tube, replaced, test drove and car seemed fine. customer came to pickup and at idle was missing and now set trouble code p0173. i suspect a vacuum leak in the area of the throttle body. if you spray carburetor ...
August 18, 2005
1999 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA29G4X
P0173: bank 2 fuel trim malfunction. Got this in the shop today with these 2 codes,(po170,po173) looked for vacum leak and can't see any (do hear like there is something at the rear of engine but can not confirm). Was wondering if anyone has had a problem like this? idle sound good not to fast.Lo...
August 23, 2005