P1670 FORD – Electronic Feedback Signal Not Detected

P1670 FORD Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1670 FORD Possible Causes

Open fuse,Faulty Injector Driver Module (IDM) relay,Open or shorted Injector Driver Module (IDM) enable circuit,Open/short in EF circuit,Open/short in Fuel Delivery Command Signal (FDCS) circuit,Injector Driver Module (IDM) powering circuits,Faulty Powertrain Control Module (PCM)

P1670 FORD Description

The Injector Driver Module (IDM) provides the EF output signal to the Powertrain Control Module (PCM) to confirm that proper timing/duration of Fuel Delivery Command Signal (FDCS) was received. Additionally, the EF signal is used to send diagnostics of the IDM and injectors (electrical) to the PCM.