Code P0496?

RJ112431

MEMBER
2019 CHEVROLET IMPALA
3.6L
6 CYL
AUTOMATIC
90,000 MILES

Replaced switch/purge solenoid. Check engine light remained. Do I need to clear the code, or will the code clear itself after normal driving cycle?

If I clear code and code comes back what are some other avenues to troubleshoot?

The gas cap is not loose and seal is still good condition.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,883 POSTS

Yes, you do need to clear the code this video will show you how:

https://youtu.be/ahK_eucFi-k

Here is information on the code:

The P0496 code is a generic powertrain code that indicates an evaporative emission system high purge flow error. This code is often encountered in vehicles with onboard diagnostics II (OBD-II) systems.

The evaporative emission system is responsible for controlling the release of fuel vapor into the atmosphere. The powertrain control module (PCM) monitors the system for leaks and proper operation. When the PCM detects excessive purge flow, it triggers the P0496 code.

There are several potential causes for the P0496 code, including:

Faulty purge solenoid: The purge solenoid controls the flow of fuel vapors from the charcoal canister to the engine. A malfunctioning solenoid can result in excessive flow, triggering the code.

Blocked or kinked purge line: Any obstruction or restriction in the purge line can cause abnormal flow and trigger the code.

Defective fuel tank pressure sensor: The fuel tank pressure sensor monitors the pressure in the fuel tank and helps the PCM determine if there is a leak. A faulty sensor can provide inaccurate readings and lead to the P0496 code.

Leaking or damaged hoses: A leak or damage in the hoses connected to the evaporative emission system can result in excessive purge flow and trigger the code.

Please go over this guide and get back to us.