Engine-Codes.com
Engine-Codes – Generic – P0656

P0656 Code - Fuel Level Output Circuit Malfunction

Quick Answer

The P0656 diagnostic trouble code (DTC) refers to a Fuel Level Output Circuit Malfunction. Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the fuel level sensor circuit, Corrosion in the fuel level sensor circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0656 indicates Fuel Level Output Circuit Malfunction.
Common causes
Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the fuel level sensor circuit, Corrosion in the fuel level sensor circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0656 Description

The P0656 diagnostic trouble code (DTC) refers to a Fuel Level Output Circuit Malfunction. This code indicates that there is an issue with the fuel level sensor circuit in the vehicle. The fuel level sensor is responsible for sending information to the vehicle's computer about the amount of fuel in the tank. This information is crucial for the accurate calculation of fuel consumption and for displaying the fuel level on the dashboard gauge.

OBDII Code P0656 - Fuel Level Output Circuit Malfunction
P0656 Code - Fuel Level Output Circuit Malfunction

Common Causes of P0656

  1. Faulty fuel level sensor
  2. Damaged wiring or connectors in the fuel level sensor circuit
  3. Corrosion in the fuel level sensor circuit
  4. ECM/PCM malfunction
  5. Electrical issues in the vehicle's wiring system

Symptoms of P0656

  1. Inaccurate fuel gauge readings
  2. Fluctuating fuel gauge readings
  3. Check Engine Light illuminated
  4. Engine stalling or hesitation
  5. Poor fuel efficiency

How to Fix P0656

  1. Diagnose the issue by using a scan tool to retrieve the DTC and inspecting the fuel level sensor circuit for any visible damage.
  2. Test the fuel level sensor's resistance and voltage to determine if it is functioning correctly.
  3. Check the wiring and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  4. Clear the DTC from the vehicle's computer and reset the system to see if the issue is resolved.
  5. If the problem persists, consider replacing the fuel level sensor or seeking professional assistance for further diagnosis and repair.

Cost to Fix P0656

The cost of repairing a Fuel Level Output Circuit Malfunction can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the repair costs for this type of problem can range from $150 to $400, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle type.

When is the Code Detected?

If the fault detection circuit senses a voltage other than what the PCM expects, the fault line status changes causing the P0656 code will set.

Need more information about the P0656 code?

Need more information on how to fix the P0656 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0656 code diagnosed by a professional: Find a repair shop in your area

Code P0656 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0656 Code

No Frequently Asked Questions about P0656 Code found.

Discuss the causes and fixes for P0656 OBDII Code

Submit a New Comment

Code P0656 comments

No comments found for this page.