Legacy GT LTD Sedan AWD F4-2.5L SOHC (2001)
PROM - Programmable Read Only Memory: Recalls
Recall - Engine Control Module Reprogramming
NUMBER: WWF-89
DATE: 04/2002
APPLICABILITY:
2000-01MY Subaru Legacy and Outback 4EAT
2000-02MY Impreza MT5 or 4EAT
2001-02MY Forester MT5 or 4EAT
SUBJECT:
Engine Control Module (ECM) Reprogramming
INTRODUCTION
Subaru of America, Inc. (SOA) has determined that some affected vehicles listed below may require ECM reprogramming. The ECM logic for the
air/fuel ratio circuit may not be broad enough to accept the signal parameters of the A/F ratio sensor. Should the A/F ratio sensor signal repeatedly
fluctuate beyond the parameters of the ECM logic, the CHECK ENGINE warning light / Malfunction Indicator Lamp (MIL) will illuminate steadily
while the engine is running, advising the driver of a malfunction and the need to seek repair service. Reprogramming the ECM will broaden the
allowable A/F ratio signal parameters and correct this condition.
This condition is a software issue and has no impact on vehicle emissions or driveability.
This service program will involve reprogramming the ECM on affected vehicles.
AFFECTED VEHICLES
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2000-01 MY Subaru Legacy and Outback with H4 engine and 4EAT transmission only. (Legacy and Outback vehicles with the H6 engine or MT5
transmission are not affected.)
^
2000-02 MY Impreza with MT5 or 4EAT. (Impreza WRX models are not affected.)
^
2001-02 MY Forester with MT5 or 4EAT.
Affected vehicles are identified in the VIN range chart.
NOTE:
