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P1171 Diagnostic Trouble Code Discussion for May 2013

Fuel System Lean During Acceleration

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Trouble Ticket Help Requests for DTC P1171
Help Request Posted
2008 Nissan Micra 1400CC Poor Idle Quality, MIL Lamp on
P1171: intake error. ... is on, when you stop the car the engine is shutting down. got at first code p1171 , look at the throttle and found it dirty , cleaned the throttle and the rpm raised to 1500 rpm steady, use the x431 and try to calibrate the throttle and got 800 rpm , and e...
May 10, 2013
1996 Saab 900 SE Turbo 2.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: YS3DF75N9T
P1171: fuel trim. ... comes and goes. The oxygen sensor is not switching according to the ecu. 3 upstream oxygen sensors all do not switch properly and mostly sits at .49v. The flow chart for p1171 says to take a 1.5v battery to check the s...
May 31, 2013