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P0170 Diagnostic Trouble Code Discussion for March 2015

Fuel Trim Lean Or Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0170
Help Request Posted
2000 Subaru Outback Limited 2.5L MIL Lamp on VIN: 4S3BH6869Y
P0170: Fuel System Too Rich Or Too Lean (Bank 1). Code p0170 keeps returning, vehicle has 156k miles, runs fine, no driveability problems, front oxygen sensor with tune-up parts has been replaced, fuel pressure test stayed within specs. Evap system working fine, no vacuum leak, purge valve and purge control v...
March 13, 2015