P1657-Alternative Fuel Rail/System Temperature - Too High: Notes

WARNING: This page is about a different car, the 2013 RAM 2500 HD and 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Alternative Fuel Rail/System Circuit Diagram

Courtesy of CHRYSLER GROUP, LLC