What is a code P2402?

OBD Code P2402 – Evaporative Emission System Leak Detection Pump Control Circuit High. The leak detection system tests for EVAP system leaks and blockage. It also performs self-diagnostics. OBD code P2402 means Evaporative Emission System Leak Detection Pump Control Circuit High.

How does the evaporative emissions control system work?

The evaporative emissions control system, typically referred to simply as the “EVAP” system, has been designed to prevent fuel vapors from escaping into the atmosphere. The EVAP system is essentially a network of tubing and valves designed to store and release fuel vapors at the right time without permitting them to get into the atmosphere.

What is the diagnostic code for evaporative emission?

P2420 is a diagnostic trouble code (DTC) for “Evaporative Emission (EVAP) Switching Valve 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.

What does the p2420 code for EVAP mean?

Evaporative Emission (EVAP) Switching Valve Control Circuit High What the P2420 code means The P2420 trouble code indicates that the Engine Control Module (ECM) has detected a malfunction within the switching control circuit of the EVAP control system of the engine.

What is the EVAP system in an engine?

The EVAP system consists of multiple parts related to the intake, fuel, and exhaust of the engine. Many systems have a purge valve that opens and closes at certain times to vent fuel vapors from the fuel tank into the intake manifold. What are the causes of the P2420 code? What are the symptoms of the P2420 code?

How does the evaporative emission system work on a car?

Although generic, the specific repair steps may vary depending on make/model. The Evaporative Emissions System (EVAP) allows fumes from the gas tank to enter the engine to be burned, rather than vented into the atmosphere as an emission. The purge valve solenoid is supplied switched battery voltage.

What is the code for the EVAP system?

The powertrain control module (PCM) routinely checks the EVAP system for any leaks and tests the ability to purge fuel vapor into the engine. If the sensor signal voltage exceeds a specific value for a certain amount of time, the PCM may log code P0453.

What causes an EVAP system code p0446?

Here are the most common causes of an EVAP System Malfunction or code P0446: 1 Malfunctioning vent control valve 2 Clogged vent valve 3 Control circuit issues (e.g., loose or damaged wiring) 4 Powertrain control module hardware or software issues (rather uncommon)