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 a sensor in your car that checks if the gas tank is sealed properly. It's like having a lid on a jar that's not screwed on tight.
The code P24D5 indicates an issue with the electrical circuit of the EVAP system's pressure sensor or switch labeled 'B'.
The EVAP (Evaporative Emission Control System) pressure sensor monitors the pressure within the fuel tank and the EVAP system to ensure that fuel vapors are not escaping into the atmosphere. The 'B' circuit refers to a specific part of this system. A fault in this circuit can lead to incorrect readings or a failure to detect leaks.
• Check Engine Light is on
• Failed emissions test
• Noticeable fuel odor
• Faulty EVAP pressure sensor
• Damaged wiring or connectors in the EVAP circuit
• Malfunctioning EVAP system switch
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 EVAP pressure sensor for proper operation.
• Replace the faulty EVAP pressure sensor.
• Repair or replace damaged wiring/connectors.
• Replace the malfunctioning EVAP system switch.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Toyota Camry
• Ford F-150
• Honda Accord
• Regularly inspect EVAP system components.
• Ensure gas cap is tightly secured.
• Perform routine vehicle maintenance.
Sensor Issue
• Check the gas cap for a proper seal.
• Have a professional inspect the EVAP system if unsure.
• Avoid overfilling the gas tank.
Check with your vehicle manufacturer for specific warranty coverage on emissions-related components.
EVAP system issues have been common as emissions standards have become stricter, leading to more sophisticated monitoring systems.
Moderate – While not immediately critical, it should be addressed to avoid emissions problems and potential fuel vapor leaks.
Driving with a faulty EVAP system may result in higher emissions and could be illegal in areas with strict emissions standards.
• Engine running
• Vehicle at operating temperature
The EVAP pressure sensor is typically located near the fuel tank or within the EVAP canister assembly.
Q: Can I drive with a P24D5 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 can lead to emissions test failures.
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.
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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.