Lack of Power and/or Illumination of the Check Engine Light on Isuzu Trooper

A loss of power and/or illumination of the Check Engine Light with associated fault code P0420 may be noted. Our technicians tell us this is generally caused by a failed catalytic converter which will require replacement.

RepairPal Verified
Average mileage: 147,000 (147,000–147,000)
1 model year affected: 1997
2 people reported this problem
1 person shared problem details
Bank 1 Catalytic reduced efficiency. Replaced Catalytic Converter
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