VIDEO

Informace

Cadillac

Cadillac P0442

See the basic definition of a diagnostic error. This will help you to clarify the main causes of the fault code. You will understand the program of the control unit
Basic DTC analysis according to OBD2 protocol standard.

OBD2 or On-Board Diagnostics displays messages for basic group styles. More comprehensible code composition has been standard since 2000. The DTC code consists of five characters and its composition will be shown in this video

Insight into programming

The basic unit for the operation of any computer is the bit. Logic 0 and 1 are expressed by a single bit. Diagnostics The error code is composed of 16 bits. The first two bits define one of the four basic circuits. The video will show you a comprehensive overview of the composition of the error report

A diagnostically understandable description of the Diagnostic Trouble Code

Cadillac P0442

Basic error definition

Evaporative Emission (EVAP) System Small Leak Detected

Cause of DTC

DTCs P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0222, P0223, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0461, P0462, P0463, P0464, P0496, P0502, P0503, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138 are not set. The ignition 1 voltage is between 10-16 volts. The barometric pressure (BARO) is greater than 74 kPa. No fuel filling during the EONV test period. The fuel level is between 15-85 percent. The start-up engine coolant temperature (ECT) and the start-up intake air temperature (IAT) are between 0-40°C (32-104°F). The barometric pressure (BARO) is greater than 74 kPa. The engine run time before engine shut-off was greater than 10 minutes. The drive distance before engine shut-off was greater than 5 kilometers (3.1 miles). The ignition is OFF. The ambient air temperature at the end of the drive cycle is between 0-32°C (32-93°F). DTC P0442 runs once per drive cycle during the hot soak period after the ignition is turned OFF and may require up to 45 minutes to complete. The controller will not make more than 2 test attempts per day. The time since the last completed EONV test must be at least 17 hours.