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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] >> DTC P2245 >> Diagnostic procedure
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Diagnostic procedure

DTC P2245 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED 
  • Have the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (HO2S related) been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform the 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 IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA 
  • Is DTC P2245 on FREEZE FRAME DATA?
 Yes Go to the next step.
No Go to troubleshooting for DTC on FREEZE FRAME DATA.
(See DTC TABLE ).
4 INSPECT FRONT HO2S CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the front HO2S connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
5 INSPECT FRONT HO2S REFERENCE VOLTAGE CIRCUIT FOR SHORT TO GROUND AT FRONT HO2S
  • Turn the ignition switch to the off.
  • Front HO2S connector disconnected.
  • Inspect the continuity between front HO2S terminal 2C (part-side) and ground.
  • Is there continuity?
 Yes Replace the front HO2S, then go to Step 8.
No Go to the next step.
6 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
7 INSPECT FRONT HO2S REFERENCE VOLTAGE CIRCUIT FOR SHORT TO GROUND AT PCM - FRONT HO2S 
  • Turn the ignition switch to the off.
  • Front HO2S and PCM connectors disconnected.
  • Inspect the continuity between front HO2S terminal 2C (harness-side) and ground.
  • Is there continuity?
 Yes Repair or replace the wiring harness for a possible short to ground between PCM terminal 2M and front HO2S sensor terminal 2C, then go to the next step.
No Go to the next step.
8 VERIFY TROUBLESHOOTING OF DTC P2245 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Perform the HO2S heater, HO2S and TWC Repair Verification Drive Mode.

    (See OBD-II DRIVE MODE ).

  • Is the PENDING CODE 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 Troubleshooting completed.
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