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P0170 Diagnostic Trouble Code Discussion for August 2005

Fuel Trim Lean Or Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0170
Help Request Posted
1999 Mercedes-Benz E320 3.2L MIL Lamp on VIN: WDBJF65H9X
P0170: Bank 1 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 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA29G4X
P0170: bank 1 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