Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the pressure in the fuel tank is too low compared to the outside air pressure. It's like when you have a balloon that isn't filled enough with air.
The vehicle's engine control module (ECM) monitors the fuel tank pressure sensor to ensure it is reading within the expected range compared to the barometric pressure. If the pressure is too low, it triggers this code.
The P11CC code is set when the ECM detects that the fuel tank pressure sensor is reading a pressure that is significantly lower than the barometric pressure. This could indicate a sensor malfunction, a leak in the fuel system, or an issue with the fuel tank venting system.
• Check Engine Light is on
• Possible fuel odor
• Difficulty starting the vehicle
• Faulty fuel tank pressure sensor
• Leaking fuel tank or fuel lines
• Blocked or malfunctioning fuel tank vent system
ECM: Engine Control Module
Barometric Pressure: The pressure exerted by the weight of the atmosphere
• Check for any visible leaks in the fuel system.
• Inspect the fuel tank pressure sensor and its wiring.
• Test the fuel tank vent system for proper operation.
• Replace the faulty fuel tank pressure sensor.
• Repair any leaks in the fuel system.
• Clean or replace components in the fuel tank vent system.
• OBD-II scanner
• Multimeter
• Smoke machine for leak detection
$150 - $500
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect the fuel system for leaks.
• Ensure the fuel cap is properly tightened.
• Have the fuel system checked during routine maintenance.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you smell fuel.
• Consider routine checks of the fuel system.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has become more common with the increased use of advanced fuel system monitoring in modern vehicles.
Moderate – While the vehicle may still operate, it is advisable to address this issue to prevent potential fuel system damage or emissions failures.
Driving with a faulty fuel system sensor can lead to increased emissions and may not comply with local environmental regulations.
• Vehicle at operating temperature
• Stable barometric pressure
The fuel tank pressure sensor is typically located on or near the fuel tank.
Q: Can I drive with a P11CC code?
A: It's possible to drive, but it's recommended to fix the issue soon to avoid potential fuel system damage.
Q: Will the P11CC code cause my car to fail emissions tests?
A: Yes, a malfunctioning fuel system can lead to increased emissions, which may result in failing an emissions test.
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