The OBD code P2402 for Toyota indicates a problem with the Canister Pump Module circuit.
Symptoms include the Engine Light being ON.
This issue is commonly caused by a faulty Canister Pump Module or related wiring issues.
It is essential to inspect the wiring harness and connectors for any damage or poor connections.
A thorough examination and repair of these components can resolve the problem.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Toyota p2402 OBD Code
The vehicle may exhibit issues related to the evaporative emission system with fault code P2402.
- Symptoms: Check Engine Light ON.
- Possible smell of fuel.
- Engine may run rough or stall at idle.
Causes of the Toyota p2402 OBD Code
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P2402 in a Toyota typically indicates a malfunction in the EVAP system leak detection pump control circuit.
- P2402 can be caused by a faulty Canister Pump Module.
- A Canister Pump Module harness that is open or shorted.
- A Canister Pump Module circuit with poor electrical connection.
- Or a faulty Engine Control Module (ECM).
Fixing Toyota Error Code p2402 Step By Step
To resolve fault code P2402 on a Toyota, inspect the EVAP system for leaks or blockages.
- To fix Toyota OBDII code P2402, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, check the operation of the EVAP system purge valve and the charcoal canister for any blockages or malfunctions.
- Test the EVAP system pressure sensor for proper operation and replace if necessary.
- Clear the fault codes from the vehicle’s computer using a scan tool and monitor the system to ensure the code does not return.
- If the code persists, consider replacing the EVAP system pressure sensor or seeking assistance from a professional technician for further diagnosis.
Cost Of Fixing Toyota p2402 Fault Code
The repair for Toyota fault code P2402 typically involves diagnosing and replacing the faulty leak detection pump.
The cost to diagnose and fix a Toyota OBD code P2402 typically ranges from $75 to $150, based on an estimated repair time of 1. 0 hour.
Factors like shop rates and complexity of the repair can influence the final cost.
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Details of the Toyota p2402 OBD Code
Code P2402 in Toyota indicates a problem with the EVAP system leak detection pump control circuit.
Code P2402 for Toyota vehicles means EVAP Leak Detection Pump Control Circuit High.
This code is triggered when the Engine Control Module (ECM) detects a high voltage signal from the Leak Detection Pump (LDP) control circuit.
The LDP is part of the Evaporative Emission Control System (EVAP) and is responsible for pressurizing and maintaining pressure in the EVAP system to check for leaks.
When the ECM detects a high voltage signal from the LDP control circuit, it sets the P2402 trouble code, indicating a potential issue with the LDP or its control circuit.
Mechanic’s Tech Notes
Detailed information on Toyota fault code P2402, including possible causes and diagnostic procedures.
To diagnose and fix OBDII code P2402 in a Toyota, start by visually inspecting the wiring harness and connectors related to the evaporative emission system.
Look for any damage or corrosion on the components and connector pins.
Use a multimeter to check the power and ground connections to the Transmission Control Module (TCM).
Additionally, use a scan tool to confirm if the TCM communicates over the Controller Area Network (CAN) network.
If necessary, consider reprogramming or reflashing the TCM to address the issue.
FAQ
The common cause of OBD code P2402 in a Toyota vehicle is a faulty Canister Pump Module or issues with the module’s wiring and connectors.
Diagnose and fix OBD code P2402 in your Toyota by checking for a faulty Canister Pump Module, inspecting wiring harness, connectors, and ECM for issues.
Yes, it is safe to drive with OBD code P2402 in a Toyota. Check and repair the Canister Pump Module and related wiring to resolve the issue.

Wrap Up
If your Toyota triggers OBD code P2402, you may notice issues with the EVAP system, such as difficulty starting the vehicle, decreased fuel efficiency, or a fuel smell.
This code typically indicates a problem with the EVAP leak detection pump control circuit, possibly caused by a faulty pump, damaged wiring, or poor electrical connections.
To address Toyota OBD code P2402, start by inspecting the wiring harness and connectors related to the EVAP leak detection pump.
Check for any signs of damage, corrosion, or loose connections.
Test the pump itself for proper operation and replace it if