Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the light that tells you what fuel mode your car is in. It's like a warning light on your dashboard isn't working right.
The P2668 code indicates an issue with the circuit that controls the fuel mode indicator lamp. This lamp is responsible for showing the driver which fuel mode the vehicle is operating in.
The P2668 code is triggered when the Engine Control Module (ECM) detects a malfunction in the circuit controlling the fuel mode indicator lamp. This could be due to a short circuit, open circuit, or a problem with the lamp itself.
• Fuel mode indicator lamp not working
• Check Engine Light illuminated
• Possible incorrect fuel mode display
• Faulty fuel mode indicator lamp
• Open or shorted wiring in the circuit
• Faulty ECM
ECM: Engine Control Module
Circuit: A complete and closed path around which a circulating electric current can flow
• Check the fuel mode indicator lamp for operation.
• Inspect wiring and connectors for damage or disconnection.
• Test the ECM for faults related to the circuit.
• Replace the faulty fuel mode indicator lamp.
• Repair or replace damaged wiring or connectors.
• Replace the ECM if found faulty.
• Multimeter
• OBD-II scanner
• Basic hand tools
$100 - $500
Moderate
• Honda Accord
• Toyota Camry
• Ford Focus
• Regularly inspect dashboard lights.
• Ensure wiring is secure and undamaged.
• Perform routine vehicle diagnostics.
Electrical Circuit Issue
• Have a professional inspect the issue.
• Avoid ignoring dashboard warning lights.
• Regularly check vehicle diagnostics.
Check with your vehicle manufacturer for specific warranty coverage on electrical components.
This code has been associated with vehicles that have complex fuel management systems, often appearing in models with alternative fuel options.
Moderate – While the vehicle may still operate, incorrect fuel mode indication can lead to inefficient fuel usage.
Driving with a malfunctioning indicator lamp may lead to improper fuel management, affecting vehicle performance and emissions compliance.
• Vehicle in operation mode
• Dashboard lights active
The fuel mode indicator lamp is typically located on the vehicle's dashboard.
Q: Can I drive with the P2668 code?
A: You can drive, but it's advisable to fix it soon to ensure proper fuel mode indication.
Q: Is this code serious?
A: It's moderately serious as it affects your awareness of the vehicle's fuel mode.
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