OBD-II Pending Trouble Code

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

These appear when a problem is detected in a monitored system. The code for a malfunctioning system is stored in the PCM memory in the first drive cycle. This code is called the pending code. If the PCM determines that the system has returned to normal or the problem was mistakenly detected, it deletes the pending code. If the problem is also found in the second drive cycle, the PCM determines that the system is malfunctioning, and the DTC is stored.