July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Code 13 - Oxygen Sensor Circuit

NOTE: If Codes 13 and 23 exist, start with Code 23.

Fig 1: Code No. 13 Schematic, Oxygen Sensor Circuit

Courtesy of ISUZU MOTOR CO.

Fig 2: Code No. 13 Flow Chart, Oxygen Sensor Circuit

Courtesy of ISUZU MOTOR CO.