Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007PICKUP F350 SUPER DUTY, 4D PICKUP, 6.0 P, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - DIAGNOSTIC SUBROUTINES -- DIESEL 6.0L (99P E-SERIES & 99P F450/550)DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONSP0683 - GLOW PLUG CONTROL MODULE (GPCM) TO POWERTRAIN CONTROL MODULE (PCM) COMMUNICATION CIRCUIT
2007 Ford Pickup F350 Super Duty, 4D Pickup, 6.0 P, 4WD, Automatic
P0683 - Glow Plug Control Module (GPCM) To Powertrain Control Module (Pcm) Communication Circuit
2007 Ford Pickup F350 Super Duty, 4D Pickup, 6.0 P, 4WD, AutomaticSECTION P0683 - Glow Plug Control Module (GPCM) To Powertrain Control Module (Pcm) Communication Circuit
P0683 - GLOW PLUG CONTROL MODULE (GPCM) TO POWERTRAIN CONTROL MODULE (PCM) COMMUNICATION CIRCUIT
| Description: | The PCM carries out a functional key ON, engine running (KOER) self-test for the glow plug system. During that test the PCM enables the GPCM and monitors the GPCM/PCM communication circuit for concerns. When the PCM detects a concern with a GPCM/PCM communication circuit, the DTC is set. | |||
| Possible Causes: |
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| Diagnostic Aids: | Diagnose DTC P0670 before diagnosing DTC P0683. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | refer to PINPOINT TEST AF . | |||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.