Diagnostic Method

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Rich
Main feedback learning value	< -0.124
Sub feedback learning value	< -0.043
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)
Total of the rich side misfire counters for each cylinder when not in idling	> 20 time(s)
Lean
Main feedback learning value	> 0.021
Sub feedback learning value	< -0.013
When any one of the followings is established.
Any one of the lean side misfire counters for each cylinder when in idling	> 115 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 idling	> 45 time(s)
Total of the lean side misfire counters for each cylinder when not in idling	> 65535 time(s)

Time Needed for Diagnosis: 1000 engine revs.

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Rich
Main feedback learning value	≥ -0.124
or
Sub feedback learning value	≥ -0.043
or
All of the following conditions are 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)
Total of the rich side misfire counters for each cylinder when not in idling	≤ 20 time(s)
Lean
Main feedback learning value	≤ 0.021
or
Sub feedback learning value	≥ -0.013
or
All of the following conditions are established.
Any one of the lean side misfire counters for each cylinder when in idling	≤ 115 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 idling	≤ 45 time(s)
Total of the lean side misfire counters for each cylinder when not in idling	≤ 65535 time(s)

Time Needed for Diagnosis: 1000 engine revs.