DTC P0677: Cylinder 7 Glow Plug Circuit/Open
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0677: CYLINDER 7 GLOW PLUG CIRCUIT/OPEN
| Description: | The PCM carries out a functional key ON, engine running (KOER) self-test for the glow plug system. During the self-test the PCM enables the glow plug control module (GPCM) which monitors each individual glow plug and harness for concerns. This DTC sets when the GPCM detects a concern with a glow plug or the glow plug harness, and the GPCM sends a message to the PCM. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check the glow plug wire harness for an open or a short circuit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST AF . | ||