Technical Service Bulletins

Mazda Reprogram

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Mazda Reprogram

Some 2012-2013 Mazda 3 vehicles equipped with a 2.3L engine may experience the MIL on with DTC P013A:00 (HO2S circuit slow response). This is caused by improper control logic of the PCM. To correct the problem, the control logic of the PCM has been changed.

1. Reboot the IDS to clear memory before reprogramming.

2. Using IDS 88.04 or later software, reprogram the PCM to the latest calibration by following the “Module Reprogramming” procedure:

  • Always update the IDS tool first, then follow the on-screen instructions to download the needed calibration file for PCM reprogramming.
  • It is not necessary to remove any fuses or relays during PCM reprogramming when the IDS screen prompts you to do so. You may accidentally stop power to one of the PCM terminals and cause the PCM to be blanked or you may receive error messages during reprogramming.
  • IDS shows the calibration part numbers after programming the PCM.
  • Please be aware that PCM calibration part numbers and file names listed in any service bulletin may change due to future releases of IDS software.
  • When reprogramming a PCM, IDS will always display the latest calibration P/N available for that vehicle.
  • When performing this procedure, Mazda recommends using the “Power Supply” mode in the battery management system to keep the battery up to capacity. If a different charger is used, make sure it does not exceed 20 amps. Exceeding 20 amps could damage the VCM.

3. After performing the PCM reprogramming, verify the repair by starting the engine and making sure there are no MIL illuminations or abnormal lights present.

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