P0698Mazda Cx-9Years: 1996 - 2026
ECM/PCM Power Relay Circuit (P0698)
Reviewed by ASE Certified Technician
What does this mean?
Code P0698 indicates a problem with the ECM/PCM power relay circuit.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mazda Cx-9 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Internal PCM/ECM failure
Damaged, chafed, or broken wiring harness
Weak or failing battery
Corroded or loose electrical connector
Symptoms to Watch For
- Check Engine Light is illuminated
- Engine cranks but won't start
- Engine stalling or dying unexpectedly
- Vehicle enters reduced power / limp mode