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Home >> Mazda >> 2009 >> 3 Mazdaspeed, 2.3 L >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (L3 With TC) >> Air Fuel Ratio (A/F) Sensor, Heated Oxygen Sensor (Ho2S) Inspection [L3 With TC] >> Notes

Air Fuel Ratio (A/F) Sensor, Heated Oxygen Sensor (Ho2S) Inspection [L3 With TC]: Notes

IMPORTANT: Be aware that Oxygen sensor terminology differs between California models (3 O2 sensors) and Non-California models (2 O2 sensors). When testing/servicing oxygen sensors, refer to SYSTEM WIRING DIAGRAMS article to properly identify appropriate sensor.
NOTE:
  • Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL .)
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