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P1424 Suzuki Code - EVAP System Leak Detect Pump Flow High/Low

Quick Answer

The P1424 Suzuki diagnostic trouble code (DTC) indicates an issue with the EVAP (Evaporative Emission Control) system Leak Detect Pump Flow being either too high or too low. Common causes include Faulty Leak Detect Pump: The pump itself may be malfunctioning and not providing the correct flow rate, Leak in EVAP System: A leak in the EVAP system, such as a cracked hose or loose gas cap, can cause the pump to detect abnormal flow, Blocked or Clogged EVAP System: Debris or buildup in the EVAP system can restrict the flow of the Leak Detect Pump. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1424 Suzuki indicates EVAP System Leak Detect Pump Flow High/Low.
Common causes
Common causes include Faulty Leak Detect Pump: The pump itself may be malfunctioning and not providing the correct flow rate, Leak in EVAP System: A leak in the EVAP system, such as a cracked hose or loose gas cap, can cause the pump to detect abnormal flow, Blocked or Clogged EVAP System: Debris or buildup in the EVAP system can restrict the flow of the Leak Detect Pump.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1424 Suzuki Description

The P1424 Suzuki diagnostic trouble code (DTC) indicates an issue with the EVAP (Evaporative Emission Control) system Leak Detect Pump Flow being either too high or too low. The EVAP system is designed to prevent fuel vapors from escaping into the atmosphere by collecting and storing them in a charcoal canister until they can be purged and burned in the engine. The Leak Detect Pump is responsible for pressurizing the EVAP system and monitoring its integrity by checking for leaks.

OBDII Code P1424 Suzuki - EVAP System Leak Detect Pump Flow High/Low
P1424 Suzuki Code - EVAP System Leak Detect Pump Flow High/Low

Common Causes of P1424 Suzuki

  1. Faulty Leak Detect Pump: The pump itself may be malfunctioning and not providing the correct flow rate.
  2. Leak in EVAP System: A leak in the EVAP system, such as a cracked hose or loose gas cap, can cause the pump to detect abnormal flow.
  3. Blocked or Clogged EVAP System: Debris or buildup in the EVAP system can restrict the flow of the Leak Detect Pump.
  4. Electrical Issues: Wiring or electrical connections related to the Leak Detect Pump may be faulty, causing incorrect flow readings.

Symptoms of P1424 Suzuki

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning EVAP system can cause the engine to run less efficiently, leading to decreased fuel economy.
  3. Strong Fuel Smell: If fuel vapors are leaking from the EVAP system, you may notice a strong smell of gasoline around the vehicle.
  4. Rough Idle: A leak in the EVAP system can cause the engine to run rough or idle inconsistently.

How to Fix P1424 Suzuki

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the trouble code and determine the exact cause of the problem.
  2. Inspect EVAP System: Check for any visible leaks, cracks, or damage in the EVAP system components.
  3. Test Leak Detect Pump: Test the functionality of the Leak Detect Pump to see if it is providing the correct flow rate.
  4. Replace Faulty Components: Replace any faulty components, such as the Leak Detect Pump, hoses, or connectors, as necessary.
  5. Clear Error Codes: After completing the repair, clear the error codes using the OBD-II scanner to reset the check engine light.

Cost to Fix P1424 Suzuki

The cost of repairing a P1424 Suzuki code can vary depending on the specific cause of the issue and the parts needed for repair. On average, the cost of replacing a Leak Detect Pump can range from $150 to $300, while repairing a leak in the EVAP system may cost between $100 and $200. Labor rates at auto repair shops typically range from $80 to $150 per hour. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1424 Suzuki Code

1. What does the OBDII code P1424 mean on a Suzuki?

P1424 indicates an issue with the EVAP (Evaporative Emission Control) system, specifically that the leak detection pump is registering flow rates that are either too high or too low.

2. What are the common symptoms of code P1424 in a Suzuki?

Symptoms may include the check engine light turning on, a noticeable fuel odor, poor fuel efficiency, and possible difficulty starting the vehicle.

3. What causes the P1424 code in a Suzuki?

Common causes include a faulty EVAP leak detection pump, damaged or disconnected EVAP hoses, a clogged charcoal canister, or a malfunctioning pressure sensor.

4. Can a loose gas cap trigger the P1424 code in a Suzuki?

While a loose gas cap is a common cause for some EVAP-related codes, P1424 is more specific to the leak detection pump flow and is less likely caused by the gas cap.

5. How do you diagnose the P1424 code in a Suzuki?

Diagnosis typically involves scanning for additional codes, inspecting EVAP hoses for leaks or damage, testing the leak detection pump, and checking the charcoal canister for blockages.

6. Can you drive a Suzuki with the P1424 code?

Driving with the P1424 code is possible, but it is not recommended for an extended period as it may lead to increased emissions and fuel odors.

7. How much does it cost to repair the P1424 code on a Suzuki?

Repair costs can vary widely depending on the specific issue, ranging from $50 to $300 for components like hoses, up to $500 or more for a replacement leak detection pump.

8. Is the P1424 code related to emissions testing?

Yes, the P1424 code indicates an EVAP system malfunction, which can cause the vehicle to fail emissions testing until the issue is resolved.

9. What tools are needed to troubleshoot the P1424 code in a Suzuki?

Troubleshooting may require an OBDII scanner, a smoke machine to detect leaks, a multimeter for electrical tests, and basic hand tools for component inspection.

10. How can I prevent the P1424 code from occurring in my Suzuki?

Regularly check and maintain the EVAP system components, ensure hoses are securely connected, and replace worn parts such as the leak detection pump or charcoal canister as needed.

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