What does code P1670 mean?

Q: What does code P1670 mean?

Electronic Feedback Signal Not Detected. P1670 on Ford vehicles means the powertrain control module (PCM) commanded an electronic feedback circuit and then looked for the expected return signal on its feedback monitor, but it never saw that signal arrive. The PCM is not reporting a sensor reading that is merely out of range; it is reporting that the electrical path it uses to confirm an output device actually switched has gone silent.

DTC codes / Ford codes / P1670

P1670 · FordElectronic Feedback Signal Not Detected

P1670 on Ford vehicles means the powertrain control module (PCM) commanded an electronic feedback circuit and then looked for the expected return signal on its feedback monitor, but it never saw that signal arrive. The PCM is not reporting a sensor reading that is merely out of range; it is reporting that the electrical path it uses to confirm an output device actually switched has gone silent.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyProfessional

AreaComputer and output circuits

Guidance is general and written for Ford vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.