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P1171 Diagnostic Trouble Code Discussion for July 2005

Fuel System Lean During Acceleration

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Trouble Ticket Help Requests for DTC P1171
Help Request Posted
1999 Isuzu Trooper S 3.5L MIL Lamp on VIN: JACDJ58X7X
P1171: Fuel System Lean During Power Enrichment. looking for help checked fuel pressure running is at 36psi. closed off return line pressure goes to 80psi. checked for vacumn leaks at intake unable to find any leaks. snap on modis says fuel pressure should be 48psi. to 55 psi. alldata says fuel pressure shou...
July 21, 2005
1999 Volvo C70 2.4L MIL Lamp on, lack of power
P1171: bank 1 system lean. This car is fixed. this is for repair database. Came in for emissions test. Had MIL light on and customer did complain of lack of power. Checking it out, found the code was system lean code. only access was OBD II generic scanner. Had ltftrim of 24% (thats hig...
July 25, 2005