Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means your car's computer has detected a problem with the sensor that checks for leaks in the fuel system. It's like when a balloon has a tiny hole, and you can't find it because the air is leaking slowly.
The P24BC code is triggered when the Engine Control Module (ECM) detects an intermittent issue in the circuit of the EVAP system leak detection pump pressure sensor.
The EVAP (Evaporative Emission Control) system prevents fuel vapors from escaping into the atmosphere. The leak detection pump pressure sensor monitors the pressure in the EVAP system to ensure there are no leaks. An intermittent circuit issue means the sensor is not consistently sending the correct signal to the ECM, indicating a potential wiring or connection problem.
• Check Engine Light illuminated
• Possible fuel smell
• Failed emissions test
• Faulty leak detection pump pressure sensor
• Damaged or corroded wiring/connectors
• Poor electrical connection
ECM: Engine Control Module
EVAP: Evaporative Emission Control
• Scan for codes and note any other related codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the leak detection pump pressure sensor for proper operation.
• Replace the leak detection pump pressure sensor if faulty.
• Repair or replace damaged wiring/connectors.
• Ensure all electrical connections are secure.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect EVAP system components.
• Ensure gas cap is properly tightened.
• Perform routine vehicle maintenance.
Sensor Issue
• Do not ignore the Check Engine Light.
• Avoid overfilling the gas tank.
• Schedule a diagnostic check if symptoms persist.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
The P24BC code has been more prevalent in vehicles with higher mileage and those frequently driven in harsh conditions.
Moderate – While not immediately critical, addressing this issue will prevent potential emissions problems.
Driving with an emissions system fault may be illegal in some areas due to environmental regulations.
• Vehicle at operating temperature
• Consistent driving conditions
The leak detection pump pressure sensor is typically located near the fuel tank or within the EVAP canister assembly.
Q: Can I drive with a P24BC code?
A: You can drive short distances, but it's best to fix the issue to avoid emissions problems.
Q: Will a P24BC code cause my car to fail an emissions test?
A: Yes, this code can cause your vehicle to fail an emissions test due to potential leaks in the EVAP system.
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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.