Code result
P2687
Fuel Supply Heater Control Circuit / Open
Moderate severity
What it means
The controller cannot drive the diesel fuel filter or supply line heater. In cold weather diesel waxing can clog the filter.
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 heater element
highOne of the most commonly reported causes for this code — check this first.
Failed heater relay
mediumA plausible cause — test and verify before replacing parts.
Related help
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