DTC P2098-Downstream Fuel Trim System 2 Lean: Notes

Fig 1: Downstream Fuel Trim System 2 - Circuit Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article.

• When Monitored: 

  With the engine running in closed loop mode, the ambient/battery temperature above (- 7°C) 20°F, altitude below 8500 ft and fuel level greater than 15%. 

• Set Condition: 

  If the PCM multiplies short term compensation by long term adaptive and a certain percentage is exceeded for two trips, a freeze frame is stored, the MIL illuminates and a trouble code is stored. Two Trip Fault. Three good trips to turn off the MIL. 

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.