P2689 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P2689 – Fuel Supply Heater Control Circuit High

 

P2689 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P2689 Possible Causes

 

Faulty Fuel Supply Heater,Fuel Supply Heater harness is open or shorted,Fuel Supply Heater circuit poor electrical connection

 

P2689 Description

 

The Powertrain Control Module (PCM) monitors the Fuel Supply Heater Control Circuit. The PCM sets the OBDII code when the Fuel Supply Heater Control Circuit is out of factory specifications.