P2402 Lexus Code - Evaporative Emission Leak Detection Pump Stuck ON
Quick Answer
5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. Common causes include Faulty Canister Pump Module, Canister Pump Module harness is open or shorted, Canister Pump Module 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
- P2402 Lexus indicates Evaporative Emission Leak Detection Pump Stuck ON.
- Common causes
- Common causes include Faulty Canister Pump Module, Canister Pump Module harness is open or shorted, Canister Pump Module 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 P2402 Lexus Description
What are the Possible Causes of the DTC P2402 Lexus?
- Faulty Canister Pump Module
- Canister Pump Module harness is open or shorted
- Canister Pump Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2402 Lexus?
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 P2402 Lexus 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 P2402 Lexus Code
What does the OBDII code P2402 mean for a Lexus?
P2402 indicates that the Evaporative Emission Leak Detection Pump is stuck in the "ON" position, causing the vehicle's emissions system to malfunction.
What are the symptoms of code P2402 in a Lexus?
Symptoms may include an illuminated check engine light, decreased fuel efficiency, and potential difficulty passing an emissions test.
What causes the P2402 code in a Lexus?
Common causes include a faulty leak detection pump, damaged wiring or connectors, a defective control module, or issues with the EVAP system components.
Can I drive my Lexus with the P2402 code?
While the car may still be drivable, it’s best to address the issue promptly to avoid further damage to the EVAP system and ensure compliance with emissions standards.
How do I diagnose the P2402 code in a Lexus?
Diagnosis involves scanning for additional codes, inspecting the leak detection pump and associated wiring, and testing the pump for proper function using a multimeter.
How do I fix the P2402 code in a Lexus?
Repairs may include replacing the leak detection pump, repairing damaged wiring or connectors, and resetting the OBDII system with a scan tool.
What is the cost to repair the P2402 code in a Lexus?
Repair costs vary but may range from $150 to $500, depending on whether the leak detection pump needs replacement or if wiring repairs are required.
Can a loose gas cap cause the P2402 code?
No, a loose gas cap typically triggers codes like P0455 or P0456. P2402 specifically relates to the leak detection pump.
How do I prevent the P2402 code from recurring?
Regularly inspect the EVAP system for damage, use high-quality replacement parts, and keep up with routine vehicle maintenance.
Does the P2402 code affect emissions testing?
Yes, the code may cause your Lexus to fail an emissions test due to a malfunction in the EVAP system.
Discuss the causes and fixes for P2402 Lexus OBDII Code
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