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P2689 Severity
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
The Fuel Supply Heater keeps the fuel above freezing. If the Fuel Supply Heater fails to operate as requested, code P2689 will be stored.
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OBD-II Code Powertrain Control Module (PCM) failure is defined as a Fuel Supply Heater Control Circuit High
The Fuel Supply Heater keeps the fuel above freezing. If the Fuel Supply Heater fails to operate as requested, code P2689 will be stored.