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 the car's computer thinks there's something wrong with the pump that checks if the gas tank is leaking. It's like a sensor telling you the pump isn't working right.
The P1473 code is triggered when the vehicle's onboard diagnostic system detects an issue with the current draw of the Diagnostic Module Tank Leakage (DM TL) pump, indicating a possible malfunction.
The DM TL pump is part of the evaporative emission control system, which helps prevent fuel vapors from escaping into the atmosphere. The system monitors the pump's electrical current to ensure it is operating within the expected range. If the current is outside this range, the P1473 code is set.
• Check Engine Light is on
• Possible fuel smell
• Failed emissions test
• Faulty DM TL pump
• Wiring issues or poor electrical connections
• Faulty control module
DM TL: Diagnostic Module Tank Leakage
OBD-II: On-Board Diagnostics, Second Generation
• Scan the vehicle for codes and freeze frame data.
• Inspect the DM TL pump and related wiring for damage.
• Test the DM TL pump's electrical current draw.
• Replace the DM TL pump if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• BMW 3 Series
• BMW 5 Series
• Mini Cooper
• Regular maintenance and inspection of the evaporative system.
• Ensure proper sealing of the gas cap.
• Avoid overfilling the fuel tank.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly check for fuel smells around the vehicle.
Check with the manufacturer for emissions-related warranties, which may cover the repair.
The P1473 code has been more common in vehicles with advanced evaporative emission control systems.
Moderate – It may not affect immediate drivability, but should be addressed to avoid emissions issues.
Ignoring emissions-related codes can lead to increased pollution and may be illegal in some areas.
• Vehicle at operating temperature
• Fuel tank between 15% and 85% full
The DM TL pump is typically located near the fuel tank or within the evaporative emission control system.
Q: Can I drive with a P1473 code?
A: Yes, but it's best to get it checked soon to avoid potential emissions issues.
Q: Will a P1473 code affect my car's performance?
A: It may not affect performance directly, but it can lead to emissions problems.
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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.