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DTC P0203: Notes

DTC P0203 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0203 Injector circuit/open-cylinder No.3
DETECTION CONDITION 
  • The CCM monitors the operation of the fuel injector drivers in the PCM. The test fails if the fuel injector circuitry is inoperative.
POSSIBLE CAUSE 
  • Fuel injector No.3 malfunction
  • Connector or terminal malfunction
  • Open circuit between fuel pump relay and fuel injector No.3 terminal B
  • Open circuit between fuel injector No.3 terminal A and PCM terminal 2BF
G04969269Courtesy of MAZDA MOTORS CORP.