What is the p0442 code for the chevy impala?

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Tina S. December 31, 2020
The P0442 code on a Chevy Mailbu means that the control module has detected a small leak in the Evaporative Emission (EVAP). The loose fuel tank filler cap is the most common cause that triggers the P0442 code. I would first make sure Your gas cap is tight and seals properly. The next common cause is a leak or damage in the EVAP system line. The EVAP system eliminates fuel vapors as a source of air pollution by sealing off the fuel system from the atmosphere. Vent lines from the fuel tank route vapors to the EVAP storage canister, where they are trapped and stored until the engine is started.
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Ken Futato August 21, 2020
How do I reset the codes on my Impala after I replaced the gas cap
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Paul R. April 9, 2020
This code in a chevy impala means that a leak has been found in the evap system.
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