When you run the ignition, then the Service Engine Soon or Check Engine B14155 light should flash briefly, indicating that the OBD system is complete to test your vehicle for any faults. After this ephemeral flash, the light should break off while you drive as long as no difficulties are noticed. You will be opening. The B14155 OBD2 code a sensor burden and extra of the sensor is questionable to resolution the fundamental difficult. Now you have nothing to worry if you have all components and necessary information for solving the problem. If you do not have necessary things, you should give task to professional.