Subaru: engine control module (ecm)reprogramming

Bulletin number

SB-WVH-18

Component

Engine and engine cooling: exhaust system: emission control: catalytic convertor

Summary

Subaru: engine control module (ECM)reprogramming. Under certain unique driving patterns, such as repeated acceleration and deceleration and/or continuous uphill driving at higher speeds (about 75mph), the catalytic converters of affected vehicles may develop high internal temperatures that exceed design parameters. If left uncorrected, this condition may eventually degrade the efficiency of the catalytic converters. Csc letter was rec'd.

Owners of these vehicles have filed 59 complaints in the engine category.