Set Condition

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Module detects that the rate of change (delta) in fuel tank pressure is below a calibrated threshold during phase 1 (Purge Solenoid ramped up) or phase 2 (Purge Solenoid ramped down) of both the non-intrusive and intrusive diagnostic.