What does code P2687 mean?

Q: What does code P2687 mean?

Fuel Supply Heater Control Circuit / Open. P2687 indicates that the powertrain control module (PCM) has detected an open circuit or excessive resistance in the fuel supply heater control circuit. This heater, used on some diesel and flex-fuel vehicles to warm the fuel for better cold-weather flow and combustion, is monitored by the PCM for expected current draw when activated. The code sets when the PCM commands the heater on but does not see the expected voltage or current feedback, indicating a wiring fault, failed heater element, or control module issue.

DTC codes / P26xx · Computer and output circuits / P2687

P2687Fuel Supply Heater Control Circuit / Open

P2687 indicates that the powertrain control module (PCM) has detected an open circuit or excessive resistance in the fuel supply heater control circuit. This heater, used on some diesel and flex-fuel vehicles to warm the fuel for better cold-weather flow and combustion, is monitored by the PCM for expected current draw when activated. The code sets when the PCM commands the heater on but does not see the expected voltage or current feedback, indicating a wiring fault, failed heater element, or control module issue.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.