LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2005 >> 3 i, Standard >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System] >> DTC P0222 >> Diagnostic procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic procedure

DTC P0222 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Technical Service Bulletin(s) repair information availability.
  • Is any related repair information available?
Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT THROTTLE BODY CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the throttle body connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
4 INSPECT TP SENSOR NO.2 CIRCUIT FOR SHORT TO GND 
  • Turn the ignition switch off.
  • Inspect for continuity between the following circuits:
    • Throttle body terminal B (wiring harness-side) and body GND
    • Throttle body terminal C (wiring harness-side) and body GND
  • Is there continuity?
Yes Repair or replace the wiring harness for a possible short to GND, then go to Step 8.
No Go to the next step.
5 INSPECT TP SENSOR NO.2  Yes Replace the throttle body, then go to Step 8. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF] , INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3] .)
No Go to the next step.
6 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
7 INSPECT TP SENSOR NO.2 CIRCUIT FOR OPEN CIRCUIT 
  • Turn the ignition switch off.
  • Inspect for continuity between the following terminals:
    • Throttle body terminal B (wiring harness-side) and PCM terminal 2K (wiring harness-side)
    • Throttle body terminal C (wiring harness-side) and PCM terminal 21 (wiring harness-side)
  • Is there continuity?
Yes Go to the next step.
No Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8 VERIFY TROUBLESHOOTING OF DTC P0222 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start the engine.
  • Is the same DTC present?
Yes Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
9 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection. (See DTC TABLE )
No DTC troubleshooting completed.