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 tank. It's like when you have a balloon with a hole, and the air is leaking out, but the car can't find where the hole is.
The P147D code is triggered when the vehicle's computer detects an issue with the circuit that controls the EVAP system's leak detection module.
The EVAP (Evaporative Emission Control) system is designed to capture and store fuel vapors from the fuel tank and prevent them from escaping into the atmosphere. The leak detection module is an integral part of this system, ensuring there are no leaks. A circuit/open issue indicates an electrical problem with the module or its connections.
• Check Engine Light is on
• Possible fuel odor
• Failed emissions test
• Faulty leak detection module
• Damaged wiring or connectors
• Blown fuse in the EVAP system circuit
EVAP: Evaporative Emission Control
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.
• Replace the leak detection module if faulty.
• Repair or replace damaged wiring or connectors.
• Replace any blown fuses associated with the EVAP system.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Regularly inspect the EVAP system components.
• Ensure proper maintenance of the vehicle's electrical system.
• Avoid overfilling the fuel tank.
Sensor Issue
• Address the issue promptly to avoid failing emissions tests.
• Consult a professional mechanic if unsure about repairs.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with vehicles having issues in the EVAP system, often due to aging components or wiring problems.
Moderate – It should be addressed soon to avoid emissions problems and potential fuel vapor leaks.
Ignoring this code may lead to increased emissions, which can be harmful to the environment and may result in fines if emissions testing is failed.
• Engine at operating temperature
• Vehicle parked on a level surface
The leak detection module is typically located near the fuel tank or within the EVAP canister assembly.
Q: Can I drive with the P147D code?
A: Yes, but it's best to fix it soon to avoid emissions issues.
Q: Will this code affect my car's performance?
A: It may not affect performance directly, but it can lead to emissions test failures.
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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.
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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.