P2689
Fuel Supply Heater Control Circuit High
P2689 is an OBD-II diagnostic trouble code meaning: Fuel Supply Heater Control Circuit High. Common causes: fuel heater malfunction, open or short circuit in control circuit. Estimated repair cost: $17–89.
Symptoms
- Difficulty starting the engine in cold weather
- Unstable engine operation at idle
- Increased fuel consumption
- Check Engine Light on Dashboard
- Possible misfires
Causes
- Fuel heater malfunction
- Open or short circuit in control circuit
- Heater relay problems
- Engine control unit malfunction
- Oxidation of contacts in the circuit
How to Fix
- Check the condition of the fuel heater
- Check the integrity of the wiring and contacts in the circuit
- Check the functionality of the heater relay
- Check fuses associated with the heating circuit
- If necessary, replace the fuel heater
Related codes
Error P2689 by Vehicle Brand
FAQ
What does the P2689 code mean?
P2689 is an OBD-II diagnostic trouble code that indicates: Fuel Supply Heater Control Circuit High
What causes a P2689 error code?
The most common causes of P2689 include: Fuel heater malfunction; Open or short circuit in control circuit; Heater relay problems; Engine control unit malfunction.
How do I fix a P2689 diagnostic trouble code?
To fix P2689: Check the condition of the fuel heater. Check the integrity of the wiring and contacts in the circuit. Check the functionality of the heater relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2689?
Yes, but get it checked soon
How much does it cost to fix P2689?
The estimated repair cost for P2689 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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