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Sup tech, i need some help, i dont understand the description on some of these codes. This is a California car so at the moment its holding me from passing smog cause of CEL. Car has 106k mi.
These codes were pulled less than two weeks ago
Prior to that i took some codes exactly a year ago on may/15, they were:
P0118 - Engine Coolant Temperature Circuit High Input
P0154 - Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P0442 - Evaporative Emission Control System Leak Detected (small leak)
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CEL Codes 
