P2405 Code - Evaporative Emission System Leak Detection Pump Sense Circuit Low
Quick Answer
The P2405 diagnostic trouble code (DTC) refers to a fault in the Evaporative Emission System Leak Detection Pump Sense Circuit. Common causes include Faulty Leak Detection Pump: The most common cause of the P2405 code is a malfunctioning leak detection pump, Damaged Wiring or Connectors: Corrosion, fraying, or damage to the wiring or connectors in the sensor circuit can lead to a low voltage condition, Malfunctioning Sensor: A faulty sensor responsible for monitoring the leak detection pump can trigger the P2405 code. 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
- P2405 indicates Evaporative Emission System Leak Detection Pump Sense Circuit Low.
- Common causes
- Common causes include Faulty Leak Detection Pump: The most common cause of the P2405 code is a malfunctioning leak detection pump, Damaged Wiring or Connectors: Corrosion, fraying, or damage to the wiring or connectors in the sensor circuit can lead to a low voltage condition, Malfunctioning Sensor: A faulty sensor responsible for monitoring the leak detection pump can trigger the P2405 code.
- 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.
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Code P2405 Description
The P2405 diagnostic trouble code (DTC) refers to a fault in the Evaporative Emission System Leak Detection Pump Sense Circuit. This system is designed to monitor the integrity of the fuel vapor control system, which helps reduce harmful emissions from the vehicle. When this code is triggered, it indicates that there is a low voltage condition detected in the circuit that is responsible for sensing the operation of the leak detection pump.
Common Causes of P2405
- Faulty Leak Detection Pump: The most common cause of the P2405 code is a malfunctioning leak detection pump.
- Damaged Wiring or Connectors: Corrosion, fraying, or damage to the wiring or connectors in the sensor circuit can lead to a low voltage condition.
- Malfunctioning Sensor: A faulty sensor responsible for monitoring the leak detection pump can trigger the P2405 code.
- Vacuum Leaks: Any leaks in the vacuum lines connected to the Evaporative Emission System can also contribute to this issue.
Symptoms of P2405
- Check Engine Light: The most common symptom associated with the P2405 code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Fuel Efficiency: A malfunctioning Evaporative Emission System can lead to decreased fuel efficiency as a result of improper fuel vapor management.
- Failed Emissions Test: If the issue is not resolved, the vehicle may fail emissions tests due to increased emissions output.
- Rough Idle: In some cases, a faulty Evaporative Emission System can cause the engine to idle roughly or inconsistently.
How to Fix P2405
- Diagnose the Issue: Use an OBD-II scanner to retrieve the trouble code and perform a visual inspection of the Evaporative Emission System components.
- Test the Leak Detection Pump: Check the functionality of the leak detection pump and associated components to identify any faults.
- Inspect Wiring and Connectors: Examine the wiring and connectors in the sensor circuit for any damage or corrosion, and repair or replace as needed.
- Replace Faulty Components: If the leak detection pump, sensor, or any other components are found to be faulty, replace them with new, functioning parts.
- Clear the Code: After completing the repairs, clear the trouble code using the OBD-II scanner to reset the check engine light and ensure the issue has been resolved.
Cost to Fix P2405
The typical repair costs for addressing a P2405 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, parts for the Evaporative Emission System, such as a leak detection pump or sensor, can range from $100 to $300. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time depending on the complexity of the issue.
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Code P2405 Information for Specific Makes
- P2405 Dodge — Evaporative Emission System Leak Detection Pump Sense Circuit Low
- P2405 Mazda — Evaporative Emission System Leak Detection Pump Sense Circuit Low
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