What are the common causes of P2687?

An open fuel supply heater element. An open in the heater control wire. A blown heater fuse. A poor or corroded heater connector. A failed heater driver in the control module.

Check the fuel supply heater fuse and power feed. Inspect the heater connector and wiring. Measure the heater element resistance. Command the heater on with a scan tool. Replace the heater if the element is open. Clear the code and retest.

P2687

Fuel Supply Heater Control Circuit/Open

System: Computer output circuits (P code)
Lamp: Check Engine Light
Category: Powertrain - Computer and Auxiliary Controls

What it means

P2687 means Fuel Supply Heater Control Circuit/Open.

Check these first

An open fuel supply heater element
An open in the heater control wire
A blown heater fuse
A poor or corroded heater connector
A failed heater driver in the control module

What to do next

Check the fuel supply heater fuse and power feed
Inspect the heater connector and wiring
Measure the heater element resistance
Command the heater on with a scan tool
Replace the heater if the element is open
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-08-30.