Ford
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Misfire Monitor Disabled Conditions
Cause:
    Engine running, then the PCM disabled the Misfire Monitor (because of no CMP sensor signals)

Hyundai
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Rough road sensor - voltage high
Cause:
    Wiring, rough road sensor, ECM

Kia
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    G-sensor - signal high
Cause:
    Wiring open/short to positive, G-sensor, ECM

Mazda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Misfire detection monitor - not enabled
Cause:
    CMP not synchronized, CMP, ECM