Code result
P06FC
Glow Plug Control Module 2 to PCM Communication Circuit
Moderate severity
What it means
Glow Plug Control Module 2 to PCM Communication Circuit: an electrical fault is present in the circuit. This affects diesel cold-start preheating.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open or short on communication wire
highOne of the most commonly reported causes for this code — check this first.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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