P2402 Code - Evaporative Emission Leak Detection Pump Stuck ON
Quick Answer
The P2402 code indicates that the Evaporative Emission Leak Detection Pump is stuck ON. Common causes include Faulty Evaporative Emission Leak Detection Pump, Wiring or electrical issues, Vacuum leaks in the system. 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
- P2402 indicates Evaporative Emission Leak Detection Pump Stuck ON.
- Common causes
- Common causes include Faulty Evaporative Emission Leak Detection Pump, Wiring or electrical issues, Vacuum leaks in the system.
- 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 P2402 Description
The P2402 code indicates that the Evaporative Emission Leak Detection Pump is stuck ON. This system is responsible for monitoring the fuel vapor emissions from the vehicle's fuel system. When the pump is stuck ON, it can lead to an increase in fuel vapor emissions, which can be harmful to the environment and may also affect the vehicle's performance.
Common Causes of P2402
- Faulty Evaporative Emission Leak Detection Pump
- Wiring or electrical issues
- Vacuum leaks in the system
- Malfunctioning purge valve
- Defective charcoal canister
Symptoms of P2402
- Check Engine Light is illuminated
- Strong fuel odor from the vehicle
- Decreased fuel efficiency
- Rough idling or stalling
- Failed emissions test
How to Fix P2402
- Diagnose the issue using a scan tool to confirm the P2402 code and identify the specific component causing the problem.
- Inspect the Evaporative Emission Leak Detection Pump and associated components for any visible damage or leaks.
- Test the wiring and connections for proper voltage and continuity.
- Replace the faulty component, whether it be the pump, wiring, or another part, with a new one.
- Clear the stored code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P2402
The cost to repair a P2402 code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the repair for this code can range from $100 to $500, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Code P2402 Information for Specific Makes
- P2402 BMW — Evaporative Emission System Leak Detection Pump Control Circuit High
- P2402 Dodge — Evaporative Emission System Leak Detection Pump Control Circuit High
- P2402 Lexus — Evaporative Emission Leak Detection Pump Stuck ON
- P2402 MINI — Evaporative Emission System Leak Detection Pump Control Circuit High
- P2402 Scion — Evaporative Emission Leak Detection Pump Stuck ON
- P2402 Toyota — Evaporative Emission Leak Detection Pump Stuck ON
Frequently Asked Questions about P2402 Code
1. What does the OBDII code P2402 mean?
P2402 indicates that the evaporative emission (EVAP) system's leak detection pump is stuck in the ON position, preventing proper operation of the system.
2. What are common symptoms of code P2402?
Symptoms include an illuminated check engine light, failed emissions tests, a fuel odor near the vehicle, and possibly reduced fuel efficiency.
3. What causes the P2402 code to appear?
Common causes include a faulty leak detection pump, damaged wiring or connectors in the EVAP system, a malfunctioning EVAP control module, or excessive corrosion in the pump assembly.
4. How serious is the P2402 code?
While it may not cause immediate drivability issues, it can lead to higher emissions, failed inspections, and potential long-term damage to the EVAP system if ignored.
5. Can you drive with a P2402 code?
Yes, but it’s recommended to address the issue promptly to prevent further damage and comply with emissions regulations.
6. How do you diagnose a P2402 code?
A mechanic will typically use a scan tool to confirm the code, inspect the leak detection pump and associated wiring, and perform EVAP system tests to pinpoint the fault.
7. How do you fix the P2402 code?
Repairs may involve replacing the leak detection pump, repairing damaged wiring, cleaning corroded connectors, or replacing the EVAP control module.
8. How much does it cost to fix a P2402 code?
The cost varies but typically ranges from $200 to $600, depending on whether the leak detection pump or other components need replacement.
9. Can a loose gas cap cause P2402?
A loose gas cap usually causes other EVAP codes, but it’s worth checking and tightening the cap as a quick first step in diagnostics.
10. Can I clear the P2402 code without fixing the problem?
Clearing the code without addressing the root cause will likely result in the code returning and may lead to more significant EVAP system issues over time.
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