LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Emissions Control System) >> Operation >> Non-Monitored Circuits >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Non-Monitored Circuits: Notes

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The PCM does not monitor the following circuits, systems and conditions that could have malfunctions causing driveability problems. The PCM might not store diagnostic trouble codes for these conditions. However, problems with these systems may cause the PCM to store diagnostic trouble codes for other systems or components. EXAMPLE:  a fuel pressure problem will not register a fault directly, but could cause a rich/lean condition or misfire. This could cause the PCM to store an oxygen sensor or misfire diagnostic trouble code

scientia non olet · About LEMON Manuals