P1670 Code: Step-by-Step Repair
The P1670 trouble code is an OBD-II diagnostic code that indicates a communication error between the Injector Driver Module (IDM) and the Powertrain Control Module (PCM). This code is particularly relevant in diesel engines, especially the Ford 7.3 Powerstroke, where it signifies that the PCM is not receiving the expected electronic feedback signal from the …
