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Home >> Mazda >> 2020 >> CX-30 Base, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine >> Check Engine Light Illuminates >> Notes
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Check Engine Light Illuminates: Notes

CHECK ENGINE LIGHT ILLUMINATES (SKYACTIV-G) DESCRIPTION AND POSSIBLE CAUSE

Troubleshooting item Check engine light illuminates
Description
  • Check engine light illuminates incorrectly.
    NOTE:
    • If there is a malfunction in the engine system, the PCM stores a DTC and illuminates the check engine light.
Possible cause
  • Emission system malfunction (DTC is stored in PCM)
  • Short or open circuit in PCM CAN communication line
  • Short or open circuit in instrument cluster CAN communication line
  • Short or open circuit in climate control unit CAN communication line
  • Instrument cluster malfunction
G13556288Courtesy of MAZDA MOTORS CORP.
G13556289Courtesy of MAZDA MOTORS CORP.