Question

Can the engine code P0442 cause the car to be hard to start on a 2015 Chevrolet Impala?

Answer 1

P0442 Evaporative emission (EVAP) system small leak detected

P0442 uses the fuel tank pressure sensor to monitor for EVAP leaks. it tests the EVAP system when the key is off. In this particular year, it can be, This is a type "A" code. type A codes are catalytic damaging codes, having an EVAP leak does not damage the catalytic convertor. but there is a reason the manufacturer listed this as Type A. the fuel tank pressure sensor shares a 5-volt low reference voltage with this sensor, The sensor is the CKP (crankshaft position sensor) the camshaft position sensor, so having this code does affect the performance of the important sensor. So in a way YES.

Just to include for your information are this known condition, which is a good idea to every now and then run a fuel injector cleaner in the fuel tank

Answer 2

P0442 CHEVROLET Code - Evaporative Emission Control System Leak Detected Small Leak

Read more: https://www.autocodes.com/p0442_chevrolet.html