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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (P2101 To U171F) (H4DOTC) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P219A Bank 1 Air-Fuel Ratio Imbalance >> Execution Condition

Execution Condition

EXECUTION CONDITION

Secondary Parameters Execution condition
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75 kPa (563 mmHg, 22.2 inHg)
Main feedback In operation
Engine speed > 1500 RPM
and
< 4000 RPM
Charging efficiency > 70% air mass %
(Target A/F in order to stabilize the Oxygen Storage Component in the catalyst after fuel cut recovery for time) Rich
  ≥ 0.5 sec
EXECUTION CONDITION

Secondary Parameters Execution condition
Misfiring diagnosis monitoring In operation
Accelerator pedal position 0%
Vehicle speed ≤ 482.8 km/h (300 MPH)
Main feedback In operation
Engine speed > 1500 RPM
and
< 4000 RPM
Charging efficiency > 70 air mass %
and
< 255 air mass %