Possible Causes
WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
| (P421) LEFT SEAT VENT FEED CIRCUIT SHORTED TO GROUND |
| (P421) LEFT SEAT VENT FEED CIRCUIT SHORTED TO THE (P921) LEFT SEAT VENT RETURN CIRCUIT |
| SEAT CUSHION VENT MOTOR SHORTED |
| SEAT BACK VENT MOTOR SHORTED |
| HEATED SEAT MODULE (HSM) |