Possible Causes
WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| (K174) INTAKE AIR HEATER RELAY CONTROL CIRCUIT OPEN/HIGH RESISTANCE |
| (K974) INTAKE AIR HEATER RELAY CONTROL RETURN OPEN/HIGH RESISTANCE |
| INTAKE AIR HEATER RELAY |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L .