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 part in your car that checks for leaks. It's like when you have a balloon with a tiny hole, and the pump that finds the hole isn't working right.
The P1471 code indicates an issue with the control circuit for the leakage diagnostic pump, which is part of the vehicle's evaporative emission control system.
The P1471 code is triggered when the Engine Control Module (ECM) detects an open circuit or malfunction in the control circuit of the leakage diagnostic pump. This pump is responsible for pressurizing the evaporative emission system to check for leaks.
• Check Engine Light illuminated
• Failed emissions test
• Possible fuel smell
• Faulty leakage diagnostic pump
• Open or shorted wiring in the pump circuit
• Bad electrical connections to the pump
ECM: Engine Control Module
Evaporative Emission System: A system that prevents fuel vapors from escaping into the atmosphere
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the leakage diagnostic pump.
• Test the pump for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the leakage diagnostic pump if faulty.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• BMW 3 Series
• Mercedes-Benz C-Class
• Volkswagen Jetta
• Regularly inspect the vehicle's emission system.
• Ensure proper maintenance of the fuel system.
• Address Check Engine Light warnings promptly.
Emissions Control System Issue
• Address the issue promptly to avoid failing emissions tests.
• Consult a professional if unsure about DIY repairs.
Check with your vehicle's manufacturer for warranty coverage on emission-related components.
The P1471 code has been more common in vehicles with complex emission systems, especially in models from the late 1990s and early 2000s.
Moderate – While the car may still run, it could fail emissions tests and potentially lead to further issues.
Operating a vehicle with a malfunctioning emission system may violate local emissions laws.
• Vehicle at operating temperature
• Evaporative system pressurized
The leakage diagnostic pump is typically located near the fuel tank or in the rear of the vehicle.
Q: Can I drive my car with a P1471 code?
A: Yes, but it's best to fix it soon to avoid emissions test failures.
Q: Will a P1471 code cause my car to fail emissions tests?
A: Yes, a malfunctioning emission system can lead to test failures.
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Fitment Required · Vehicle-fitment part
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