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 a part of your car that checks for fuel leaks isn't working right. It's like a nose that can't smell if there's a gas leak.
The EVAP system is responsible for capturing and recycling fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The leak detection pump switching valve is a component of this system that helps check for leaks.
The P24C1 code indicates that the Engine Control Module (ECM) has detected a problem with the performance of the EVAP system's leak detection pump switching valve. It may be stuck in the 'off' position, preventing the system from properly checking for leaks.
• Check Engine Light is on
• Possible fuel odor
• Failed emissions test
• Faulty leak detection pump switching valve
• Electrical issues such as damaged wiring or connectors
• Malfunctioning ECM
EVAP: Evaporative Emission Control System
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the leak detection pump switching valve for damage.
• Check electrical connections and wiring for continuity.
• Replace the leak detection pump switching valve if faulty.
• Repair or replace any damaged wiring or connectors.
• Update or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 to $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect the EVAP system components.
• Ensure proper maintenance of the vehicle's electrical system.
• Avoid overfilling the fuel tank.
EVAP System Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a qualified mechanic.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
The P24C1 code is relatively uncommon and typically associated with newer vehicle models equipped with advanced EVAP systems.
Moderate – It is important to address this issue to prevent potential fuel leaks and ensure the vehicle passes emissions tests.
Driving with a malfunctioning EVAP system may lead to increased emissions and potential safety hazards due to fuel vapor leaks.
• Vehicle should be at operating temperature.
• Perform tests in a well-ventilated area.
The leak detection pump switching valve is typically located near the fuel tank or within the EVAP canister assembly.
Q: Can I drive with a P24C1 code?
A: While you can drive with this code, it's best to get it fixed soon to avoid potential emissions issues.
Q: Will a P24C1 code affect my fuel economy?
A: It might not directly affect fuel economy, but unresolved EVAP issues can lead to other problems.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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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.