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 found a problem with the system that checks for leaks in the gas tank and fuel system when the engine is turned off.
The P1405 code is triggered when the vehicle's Engine Control Module (ECM) detects an issue with the Evaporative Emission Control (EVAP) system's leak detection module, specifically related to the engine off timer function.
The EVAP system prevents fuel vapors from escaping into the atmosphere by capturing them in a charcoal canister. The leak detection module checks for leaks in this system. The engine off timer is a function that tests the system for leaks when the engine is not running. If the ECM detects a malfunction in this process, it sets the P1405 code.
• Check Engine Light is on
• Failed emissions test
• Fuel odor
• Faulty EVAP leak detection pump
• Damaged or disconnected vacuum hoses
• Faulty EVAP pressure sensor
EVAP: Evaporative Emission Control
ECM: Engine Control Module
• Use an OBD-II scanner to verify the code.
• Inspect vacuum hoses and connections for damage or disconnection.
• Check the EVAP leak detection pump for proper operation.
• Replace or repair damaged vacuum hoses.
• Replace the EVAP leak detection pump if faulty.
• Test and replace the EVAP pressure sensor if necessary.
• OBD-II scanner
• Vacuum gauge
• Multimeter
$100 - $400
Moderate
• Ford Explorer
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain EVAP system components.
• Ensure fuel cap is properly tightened.
• Use high-quality fuel to prevent residue buildup.
Emission Control System Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Do not ignore the issue as it can lead to failed emissions tests.
• Regular maintenance can prevent such issues.
Check with the vehicle manufacturer for specific warranty coverage on emission-related components.
The P1405 code has been more commonly reported in vehicles with higher mileage or those that have not undergone regular maintenance.
Moderate – While not immediately critical, it should be addressed to ensure the vehicle passes emissions tests and operates efficiently.
Driving with a malfunctioning EVAP system can lead to increased emissions and may be illegal in areas with strict air quality regulations.
• Engine off
• Vehicle parked
The EVAP leak detection module is typically located near the fuel tank or within the engine compartment, depending on the vehicle model.
Q: Can I drive with a P1405 code?
A: Yes, but it is advisable to fix it soon to avoid failing emissions tests and to ensure the vehicle runs efficiently.
Q: Will a P1405 code affect fuel economy?
A: It might, as a malfunctioning EVAP system can lead to fuel vapors escaping, which could slightly affect fuel economy.
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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.