Video on how to diagnose dtc p0456 evap system leak detected very small leak on any vehicle. This test was done on a 2002 jeep grand cherokee laredo with .
Turns out the brand new replacement gas cap I replaced 1 month prior was leaking.
A P0456 OBD 2 engine code means that the system has detected a small EVAP leak. Watch as we guide through some simple steps on diagnosing the leak.
Video on diagnosing and repairing code p0455, evap system gross or large leak detected, and p0442, evap small leak detected, on a 2002 jeep grand cherokee .