The OBD code P2420 for Toyota indicates a problem with the Canister Pump Module.
Symptoms include the Engine Light being ON.
This code is usually caused by a faulty Canister Pump Module, open/shorted harness, poor electrical connection, or a faulty Engine Control Module.
It is important to address this issue promptly to prevent further damage.
A possible fix is to inspect and repair any damaged components or wiring connections related to the Canister Pump Module.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Toyota p2420 OBD Code
The vehicle may exhibit issues related to the evaporative emission system due to fault code P2420.
- Symptoms: Engine Light ON.
- Possible smell of fuel.
- Engine may run rough or hesitate during acceleration.
- Vehicle may have difficulty starting.
Causes of the Toyota p2420 OBD Code
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P2420 in a Toyota typically indicates an issue with the evaporative emission system pressure sensor circuit.
- P2420 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.
- A faulty Engine Control Module (ECM).
Fixing Toyota Error Code p2420 Step By Step
Replace the vapor pressure sensor in the evaporative emission control system for Toyota fault code P2420.
- To fix Toyota OBDII code P2420, 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 pressure sensor and the charcoal canister for any signs of damage or contamination.
- Inspect the vacuum hoses connected to the EVAP system for leaks or blockages.
- Test the operation of the EVAP purge valve and solenoid to ensure proper functioning.
- Clear the fault code using a scan tool after completing the repairs and test drive the vehicle to verify that the code does not return.
Cost Of Fixing Toyota p2420 Fault Code
The repair for Toyota fault code P2420 typically involves replacing the evaporative emission system vent valve.
The cost to diagnose and fix Toyota OBD code P2420 typically ranges from $75 to $150, based on a 1. 0hour repair time.
Factors like shop rates and complexity can affect the final cost.
Details of the Toyota p2420 OBD Code
Code P2420 in Toyota indicates an issue with the evaporative emission system vent valve stuck closed.
Code P2420 for Toyota means Evaporative Emission System Switching Valve Control Circuit High.
This code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the control circuit of the evaporative emission system switching valve.
The evaporative emission system helps to reduce the emission of harmful gases from the fuel system.
The switching valve controls the flow of fuel vapors from the fuel tank to the charcoal canister for storage and later combustion in the engine.
A high voltage in the control circuit can be caused by issues such as a short to power in the wiring, a faulty switching valve, or a malfunctioning ECM.
When diagnosing this code, technicians typically check the wiring and connectors for any damage or corrosion, test the switching valve for proper operation, and verify the ECM’s functionality.
Repairing or replacing the faulty components should resolve the P2420 code and ensure proper operation of the evaporative emission system.
Mechanic’s Tech Notes
P2420 indicates a problem with the evaporative emission system vent valve stuck closed on Toyota vehicles.
To diagnose and fix OBDII code P2420 in a Toyota, start by visually inspecting the wiring harness and connectors related to the Transmission Control Module (TCM).
Look for any damage or corrosion on the connector pins.
Use a multimeter to check TCM power and ground connections.
Utilize a scan tool to confirm TCM communication over the Controller Area Network (CAN) network.
If necessary, consider reprogramming the TCM.
This comprehensive approach will help identify and address issues causing the P2420 fault code.
FAQ
Common symptoms of OBD code P2420 in a Toyota: Engine Light ON. Causes: Faulty Canister Pump Module, wiring issues. Fix: Inspect wiring, connectors for damage.
OBD code P2420 in a Toyota is typically caused by a faulty Canister Pump Module, open/shorted harness, poor connection, or faulty ECM. Inspect and repair as needed.
Diagnose and fix OBD code P2420 in a Toyota: Symptoms Engine Light ON; Causes Faulty Canister Pump Module, harness issues; Fix Inspect wiring, connectors for damage.
Wrap Up
If your Toyota triggers OBD code P2420 and you notice issues with the EVAP system, it could be caused by a faulty EVAP vent valve, a clogged EVAP canister, or a malfunctioning pressure sensor.
These issues may lead to difficulties refueling, a fuel smell, or an illuminated check engine light.
To address Toyota OBD code P2420, inspect the EVAP system components for any signs of damage or blockages.
Check the wiring and connectors for corrosion, loose connections, or breaks.
Test the EVAP vent valve and pressure sensor for proper operation and replace
