P2406 Hyundai Code - Evaporative Emission System Leak Detection Pump Sensor Circuit High
Quick Answer
The Diagnostic Module Tank Leakage (DM-TL) is used to monitor the evaporative system for leaks. Common causes include Faulty Diagnostic Module Tank Leakage (DM-TL), Diagnostic Module Tank Leakage harness is open or shorted, Diagnostic Module Tank Leakage circuit poor electrical connection. 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
- P2406 Hyundai indicates Evaporative Emission System Leak Detection Pump Sensor Circuit High.
- Common causes
- Common causes include Faulty Diagnostic Module Tank Leakage (DM-TL), Diagnostic Module Tank Leakage harness is open or shorted, Diagnostic Module Tank Leakage circuit poor electrical connection.
- 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.
Code P2406 Hyundai Description
What are the Possible Causes of the DTC P2406 Hyundai?
- Faulty Diagnostic Module Tank Leakage (DM-TL)
- Diagnostic Module Tank Leakage harness is open or shorted
- Diagnostic Module Tank Leakage circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P2406 Hyundai?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2406 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P2406 Hyundai Code
1. What does the OBDII code P2406 mean on a Hyundai?
P2406 indicates that the Evaporative Emission System (EVAP) Leak Detection Pump Sensor Circuit is reading a voltage higher than expected, which might point to a malfunction in the EVAP system.
2. What are the common symptoms of code P2406 in a Hyundai?
Symptoms may include an illuminated Check Engine Light, a potential drop in fuel efficiency, and the vehicle failing an emissions test. In most cases, there are no noticeable driving performance issues.
3. What causes the P2406 code to appear in a Hyundai?
Potential causes include a faulty leak detection pump, damaged or corroded wiring in the sensor circuit, a defective EVAP pressure sensor, or a problem with the vehicle’s powertrain control module (PCM).
4. Can a loose gas cap trigger code P2406 in a Hyundai?
A loose gas cap is unlikely to cause P2406, as this code relates specifically to the EVAP leak detection pump sensor circuit, not the general integrity of the EVAP system.
5. How do I diagnose the P2406 code on my Hyundai?
Diagnosis involves checking the leak detection pump and its sensor, inspecting the wiring and connectors for damage, and testing the voltage and resistance in the circuit with a multimeter.
6. Can I drive my Hyundai with the P2406 code active?
Yes, you can typically drive with this code active, but it’s recommended to address it promptly to avoid potential damage to the EVAP system and to ensure your vehicle passes emissions tests.
7. How much does it cost to fix the P2406 code on a Hyundai?
Repair costs can vary. Replacing a leak detection pump may cost $200–$500, while fixing wiring issues could be less expensive. A professional diagnosis will provide a more accurate estimate.
8. Can I fix the P2406 code on my Hyundai myself?
If you have basic automotive diagnostic tools and knowledge, you can inspect the wiring, connectors, and pump. However, more complex repairs may require professional assistance.
9. What happens if I ignore the P2406 code on my Hyundai?
Ignoring the code could lead to further damage in the EVAP system, reduced fuel efficiency, and the inability to pass an emissions test.
10. Does clearing the P2406 code with an OBDII scanner fix the issue?
Clearing the code will remove the Check Engine Light temporarily, but it won't solve the underlying problem. The code will likely return until the issue is properly addressed.
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