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P2402 is a diagnostic trouble code (DTC) for "EVAP Leak Detection Pump Control Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
P2402 is an OBD-II generic code for the engine control module (ECM) detecting the evaporative system leak detection pump control circuit has a high voltage signal return.
The ECM monitors the EVAP control system pump current and if the current goes higher than specified then the code is set.
The evaporative system pump drawing too many amps or high resistance in the power circuit.
The system to control the pump motor has a shorted wire harness.
The Check Engine light will be illuminated and the code is set in ECM memory as a fault.
The vehicle will not run any different in most cases.
The vehicle may have a blown circuit fuse to the pump power relay.
The vehicle will fail emission testing.
Scans for codes and documents the code in the ECM and looks at the freeze frame data for the problem before clearing the codes and retesting.
Tests the pump connector for issues causing a short of the wiring.
Tests the resistance of the pump and check specifications.
Tests wiring for shorts between power supply and the pump/
Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired
Failing to clear the ECM codes after the codes are fixed
Failing to replace the burned out fuse after the pump is replaced
Code P2402 is an indication that the evaporative pump is shorted internally and other than failing emission tests and the check engine light being on, should not cause any drivability problems.
Code P2402 for the evaporative pump is drawing more amps than specified. This is common on higher mileage vehicles after the pump has gotten worn or if the pump relay sticks on and runs the motor continuously until the pump burns out. Test for this when replacing the bad pump.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.