Technical Service Bulletin 01-005-22 — 2018 MAZDA CX-5

Some customers may experience a check engine light illumination with DTCs P24C6:00, P24C7:00, P24AE:00, P24B1:00 and/or P24AF:00 stored in PCM memory. - P24C6:00 - PM sensor: internal temperature sensor malfunction (1DC DTC) - P24C7:00 - PM sensor temperature circuit range/performance (2DC DTC) - P24AE:00 - PM sensor control circuit range/performance problem (1DC DTC) - P24B1:00 - PM sensor circuit high input (1DC DTC) - P24AF:00 - PM sensor circuit range/performance (2DC DTC) [Particulate Matter (PM) Sensor] DTCs may be caused by the following: - DTC P24C6:00: May be caused by water condensation in the exhaust system which may accumulate on the PM sensor element and result in cracks. - DTCs P24AE:00, P24B1:00, P24AF:00: May also be caused by water condensation in the exhaust system which may accumulate on the PM sensor element and result in an incorrect output signal. To eliminate these DTCs, the following improvements have been made: - The PM sensor has been improved (DTC P24C6:00). - The mounting orientation of the PM sensor has been changed to reduce water accumulation (DTCs P24AE:00, P24B1:00, P24AF:00). - The detection condition of DTCs P24AE:00 and P24B1:00 has been changed to 2DC, which will no longer detect a temporary incorrect sensor output.