OBD-II code · Powertrain (generic, extended)
P2687 Fuel Supply Heater Control Circuit / Open
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 with P2687?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen heater element
- PossibleFailed heater relay
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Fuel Supply Heater, Heater Relay, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.