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 there is a problem with a part in your car that checks for leaks in the fuel system. It's like when you have a balloon with a tiny hole, and the air slowly leaks out. The car has a pump to check for these leaks, and something is not working right with it.
The P1476 code indicates an issue with the leakage diagnostic pump, which is responsible for detecting leaks in the vehicle's evaporative emission control system.
The leakage diagnostic pump is part of the evaporative emission control system. It pressurizes the fuel system to check for leaks. The P1476 code is triggered when the pump detects a problem, such as a clamped tube or a malfunctioning reed switch circuit, which prevents it from operating correctly.
• Check Engine Light is on
• Failed emissions test
• Possible fuel smell
• Clamped or blocked tube in the diagnostic pump
• Faulty reed switch in the diagnostic pump
• Wiring issues or electrical faults in the pump circuit
Evaporative Emission Control System: A system in vehicles that prevents fuel vapors from escaping into the atmosphere.
Reed Switch: An electrical switch operated by an applied magnetic field, used in the leakage diagnostic pump.
• Inspect the tubes and hoses for any clamping or blockage.
• Check the wiring and connections to the leakage diagnostic pump.
• Test the reed switch functionality within the pump.
• Replace or unclamp any blocked tubes.
• Repair or replace faulty wiring or connectors.
• Replace the leakage diagnostic pump if the reed switch is defective.
• OBD-II scanner
• Multimeter
• Vacuum pump
$150 - $400
Moderate
• BMW 3 Series (E46)
• BMW 5 Series (E39)
• BMW Z3
• Regularly inspect hoses and tubes for wear or damage.
• Ensure proper maintenance of the evaporative emission system.
• Use high-quality fuel to prevent deposits.
Evaporative Emission Control System Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent such issues.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
P1476 is a common code in vehicles with advanced evaporative emission systems, especially in models from the late 1990s to early 2000s.
Moderate – While the vehicle may still run, it can lead to increased emissions and potential fuel system damage.
Driving with a malfunctioning evaporative emission system may lead to increased pollution and potential legal issues during emissions testing.
• Engine at operating temperature
• Fuel tank between 15% and 85% full
The leakage diagnostic pump is typically located near the fuel tank or within the engine compartment.
Q: Can I drive my car with a P1476 code?
A: Yes, but it's not recommended for long periods as it can lead to increased emissions and potential damage.
Q: How can I clear a P1476 code?
A: You can clear the code with an OBD-II scanner, but it's important to fix the underlying issue first.
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Specialty · Smoke machine
Helpful for finding EVAP and vacuum leaks that are hard to see with visual inspection alone.
Helpful for tracking down EVAP and vacuum leaks that can trigger emissions faults.
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Helpful when the code points toward exhaust or oxygen-sensor work and space is tight.
Useful when the diagnosis points toward oxygen-sensor removal or replacement.
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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.