LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 6) >> DTC P0045-00: WASTEGATE Valve Actuator Control Circuit Low Input >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0045-00: WASTEGATE Valve Actuator Control Circuit Low Input: Notes

DTC P0045:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0045:00 Wastegate valve actuator control circuit low input
DETECTION CONDITION
  • If the voltage from the wastegate valve actuator is below specified value, the PCM determines that the wastegate valve actuator circuit has a malfunction.

Diagnostic support note
  • This is a continuous monitor (CCM).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA is not available.
  • Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Stop the supercharging pressure control. (fully open the wastegate valve)
POSSIBLE CAUSE
  • Wastegate valve connector or terminals malfunction
  • Short to ground in wiring harness between the following terminals:
    • Wastegate valve terminal F-PCM terminal 1CD
      • Wastegate valve terminal B-PCM terminal 1BZ
  • PCM connector or terminals malfunction
  • Open circuit in wiring harness between the following terminals:
    • Wastegate valve terminal F-PCM terminal 1CD
      • Wastegate valve terminal B-PCM terminal 1BZ
  • Wastegate valve actuator malfunction
  • PCM malfunction
G13697810Courtesy of MAZDA MOTORS CORP.