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 car's system that checks for leaks in the fuel system. It's like when a balloon has a tiny hole, and the car's computer can't check it properly.
The P147F code indicates that the voltage in the circuit for the EVAP system's leak detection module is higher than expected.
The EVAP (Evaporative Emission Control) system is responsible for capturing fuel vapors from the fuel tank and preventing them from escaping into the atmosphere. The leak detection module monitors the system for leaks. When the circuit's voltage is higher than normal, it triggers the P147F code.
• Check Engine Light is on
• Failed emissions test
• Possible fuel odor
• Faulty leak detection module
• Wiring issues such as shorts or open circuits
• Defective EVAP system sensor
EVAP: Evaporative Emission Control System
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the leak detection module for proper operation
• Repair or replace damaged wiring or connectors
• Replace the leak detection module if faulty
• Clear the code and test drive to ensure the issue is resolved
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Regularly inspect and maintain the EVAP system
• Ensure gas cap is properly sealed
• Perform routine vehicle diagnostics
Sensor Issue
• Avoid overfilling the fuel tank
• Ensure the gas cap is tightly closed after refueling
Check if the vehicle's emissions warranty covers EVAP system components.
This code has been reported in vehicles with aging EVAP systems, often due to wear and tear.
Moderate – While not immediately critical, it should be addressed to prevent emissions issues and potential fuel economy loss.
Driving with an emissions system fault may result in a failed emissions test and contribute to environmental pollution.
• Vehicle at operating temperature
• Fuel level between 15% and 85%
The EVAP leak detection module is usually located near the fuel tank or in the engine compartment.
Q: Can I drive with a P147F code?
A: Yes, but it's best to fix it soon to avoid emissions issues and potential fuel economy loss.
Q: Will a P147F code cause my car to fail an emissions test?
A: Yes, this code can cause your vehicle to fail an emissions test.
High-End · Full-system diagnostics
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Network faults often require full-system access instead of a generic code reader alone.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
Fitment Required · Vehicle-fitment part
Relevant when EVAP diagnosis points toward purge-flow or purge-control faults.
EVAP diagnosis often includes purge-flow and valve-control faults.
Confirm the failed valve and exact fitment before buying parts.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.