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P1171 Diagnostic Trouble Code Discussion for June 2013

Fuel System Lean During Acceleration

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Trouble Ticket Help Requests for DTC P1171
Help Request Posted
2000 Saab 9-5 2.3t 2.3L Poor Idle Quality, Stall, Runs lean VIN: YS3ED45E6Y
P1171: Short term fuel trim to max too lean. ... came with P1171 (too lean condition) and sometimes a low idle or stalling condition when coming to a stop. The O2 sensors (both before and after the cat) are reading below .1V at idle. When accelerating they tend to go back to normal. The fuel pressure se...
June 07, 2013