U0677
Lost Communication With Fuel Level Sensor B
U0677 is an OBD-II diagnostic trouble code meaning: Lost Communication With Fuel Level Sensor B. Common causes: open or short circuit in the sensor circuit, fuel level sensor b malfunction. Estimated repair cost: $17–67.
Symptoms
- Incorrect fuel level readings on the dashboard
- Fuel indicator flashes or does not work
- Error message on display
- Problems with calculating fuel consumption
- Inability to determine the exact volume of fuel in the tank
Causes
- Open or short circuit in the sensor circuit
- Fuel level sensor B malfunction
- Poor contact in the sensor connector
- Corroded contacts or damaged wiring
- Problems with the ECU
How to Fix
- Check the integrity of the wiring to the fuel level sensor
- Inspect and clean the sensor connector contacts
- Check the resistance of the fuel level sensor
- If necessary, replace the fuel level sensor
- Carry out ECU diagnostics if the error persists
Related codes
Error U0677 by Vehicle Brand
FAQ
What does the U0677 code mean?
U0677 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Fuel Level Sensor B
What causes a U0677 error code?
The most common causes of U0677 include: Open or short circuit in the sensor circuit; Fuel level sensor B malfunction; Poor contact in the sensor connector; Corroded contacts or damaged wiring.
How do I fix a U0677 diagnostic trouble code?
To fix U0677: Check the integrity of the wiring to the fuel level sensor. Inspect and clean the sensor connector contacts. Check the resistance of the fuel level sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0677?
Limited driving only, diagnose soon
How much does it cost to fix U0677?
The estimated repair cost for U0677 is $17–67. Actual cost depends on your vehicle, location, and labor rates.
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