Index Subaru Subaru Impreza 3 / Impreza WRX / Impreza WRX STI - service repair manual 2008-2014 year
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GD(H4DOTC)-92 Diagnostic Trouble Code (DTC) Detecting Criteria GENERAL DESCRIPTION 3. ENABLE CONDITIONS 4. GENERAL DRIVING CYCLE Perform diagnosis only once in a city driving including normal acceleration and deceleration. Diagnostic method 1 Secondary Parameters Enable Conditions Battery voltage > 10.9 V Closed loop control with main feedback Operation Front oxygen (A/F) sensor impedance ≥ 0 Ω Elapsed time after starting the engine ≥ 0 ms Engine coolant temperature ≥ –40 °C (–40 °F) Engine speed ≥ 1000 rpm Amount of intake air ≥ 10 g/s (0.35 oz/s) Elapsed time after returning from the fuel cut ≥ 3000 ms Accelerator pedal position ≠ 0% Diagnostic method 2 Secondary Parameters Enable Conditions Battery voltage > 10.9 V Closed loop control with main feedback Operation Front oxygen (A/F) sensor impedance ≥ 0 Ω Elapsed time after starting the engine ≥ 0 ms Engine coolant temperature ≥ –40 °C (–40 °F) Engine speed ≥ 1000 rpm Amount of intake air ≥ 10 g/s (0.35 oz/s) Elapsed time after returning from the fuel cut ≥ 3000 ms Learning value of EVAP conc. during purge < 1 Total time of operating canister purge ≥ 0 s Engine load change < 255 g/rev (8.99 oz/rev) Accelerator pedal position ≠ 0% Diagnostic method 3 Secondary Parameters Enable Conditions Battery voltage > 10.9 V Closed loop control with main feedback Operation Front oxygen (A/F) sensor impedance ≥ 0 Ω Elapsed time after starting the engine ≥ 0 ms Engine coolant temperature ≥ –40 °C (–40 °F) Vehicle speed ≥ 40 km/h (24.9 MPH) Engine speed ≥ 1000 rpm Amount of intake air ≥ 10 g/s (0.35 oz/s) Learning value of EVAP conc. during purge < 1 Catalyst depletion diagnosis Not under diagnosis |