Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that a part of the system that checks for leaks in the fuel system isn't working right. It's like a little door that didn't close, so the car can't do its test properly.
The P1475 code indicates that the reed switch in the leakage diagnostic pump did not close as expected, preventing the system from performing its leak detection function.
The leakage diagnostic pump is a part of the vehicle's evaporative emission control system (EVAP). It pressurizes the fuel system to check for leaks. The reed switch is a sensor that detects the position of the pump's internal components. If the reed switch does not close, it means the pump is not reaching the correct position to perform a leak test.
• Check Engine Light is on
• Failed emissions test
• Possible fuel smell
• Faulty leakage diagnostic pump
• Damaged or stuck reed switch
• Wiring issues or poor electrical connections
Reed Switch: A type of switch that opens or closes in response to a magnetic field.
EVAP System: Evaporative Emission Control System, which prevents fuel vapors from escaping into the atmosphere.
• Scan the vehicle for OBD-II codes and confirm P1475 is present.
• Inspect the wiring and connections to the leakage diagnostic pump.
• Test the functionality of the reed switch and pump.
• Replace the leakage diagnostic pump if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the reed switch if it is stuck or damaged.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• BMW 3 Series
• Mercedes-Benz C-Class
• Volkswagen Jetta
• Regular maintenance checks on the EVAP system.
• Ensure fuel cap is properly sealed.
• Avoid overfilling the fuel tank.
Sensor Issue
• Do not ignore the check engine light.
• Get the vehicle checked by a professional if you smell fuel.
• Regularly check the fuel cap for proper sealing.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been more common in vehicles with aging EVAP systems. It often indicates wear and tear in the diagnostic pump or reed switch.
Moderate – While the vehicle may still operate, it could fail emissions tests and may have increased fuel vapor emissions.
Driving with a malfunctioning EVAP system can lead to increased emissions. Ensure repairs are done to comply with environmental regulations.
• Vehicle should be at operating temperature.
• Perform tests in a well-ventilated area.
The leakage diagnostic pump is typically located near the fuel tank or under the rear of the vehicle.
Q: What happens if I ignore the P1475 code?
A: Ignoring the code can lead to failed emissions tests and potential fuel vapor leaks.
Q: Can I drive with the P1475 code?
A: Yes, but it's recommended to fix it soon to avoid emissions issues and potential fuel smells.
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Universal · Digital multimeter
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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.