Index Subaru Subaru Impreza 3 / Impreza WRX / Impreza WRX STI - service repair manual 2008-2014 year
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GD(H4DOTC)-272 Diagnostic Trouble Code (DTC) Detecting Criteria GENERAL DESCRIPTION 4. DIAGNOSTIC METHOD • Abnormality Judgment Judgment Value Time Needed for Diagnosis: 1000 engine revs. Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy- cles. Models without SI-DRIVE Malfunction Criteria Threshold Value Rich
Main feedback learning value < –0.16 Sub feedback learning value < –0.0124 When any one of the followings is established.
• Any one of the rich side misfire counters for each cylinder when in idling > 8 time(s) • Total of the rich side misfire counters for each cylinder when in idling > 8 time(s) • Any one of the rich side misfire counters for each cylinder when not in idling > 18 time(s) > 18 time(s) Lean
Main feedback learning value > 0.075 Sub feedback learning value < 0 When any one of the followings is established.
• Any one of the lean side misfire counters for each cylinder when in idling > 113 time(s) • Total of the lean side misfire counters for each cylinder when in idling > 65535 time(s) • Any one of the lean side misfire counters for each cylinder when not in > 127 time(s) • Total of the lean side misfire counters for each cylinder when not in idling > 65535 time(s) Models with SI-DRIVE Malfunction Criteria Threshold Value Rich
Main feedback learning value < –0.14 Sub feedback learning value < –0.017 When any one of the followings is established.
• Any one of the rich side misfire counters for each cylinder when in idling > 9 time(s) • Total of the rich side misfire counters for each cylinder when in idling > 9 time(s) • Any one of the rich side misfire counters for each cylinder when not in idling > 20 time(s) > 20 time(s) Lean
Main feedback learning value > 0 Sub feedback learning value < 100 When any one of the followings is established.
• Any one of the lean side misfire counters for each cylinder when in idling > 177 time(s) • Total of the lean side misfire counters for each cylinder when in idling > 65535 time(s) • Any one of the lean side misfire counters for each cylinder when not in > 192 time(s) • Total of the lean side misfire counters for each cylinder when not in idling > 65535 time(s) |