Home

Mazdamanuals.com

 DTC P2452 [MZR-CD (RF Turbo)]

DTC P2452 [MZR-CD (RF Turbo)]

id0102f1118800

DTC P2452

Exhaust gas pressure sensor circuit problem

DETECTION CONDITION

• The PCM monitors the pressure by the exhaust gas pressure sensor circuit voltage. If the differential pressure is -5 kPa {-38 mmHg, -1.5 inHg} or more than 5 kPa {38 mmHg, 1.5 inHg}, the PCM determines that there is a exhaust gas pressure sensor circuit problem.

POSSIBLE CAUSE

• Exhaust gas pressure sensor malfunction
• Connector or terminal malfunction
• PCM malfunction

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 service 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
VERIFY RELATED PENDING CODE OR STORED DTC
• Turn the engine switch off, then to the ON position (Engine off).
• Verify the related PENDING CODE or stored DTCs.
• Are other DTCs present?
Yes
Go to the appropriate DTC inspection.
No
Go to the next step.
4
INSPECT EXHAUST GAS PRESSURE SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the exhaust gas pressure sensor 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 7.
No
Go to the next step.
5
INSPECT EXHAUST GAS PRESSURE SENSOR
• Inspect the exhaust gas pressure sensor.
• Is there any malfunction?
Yes
Replace the exhaust gas pressure sensor, then go to Step 7.
No
Go to the next step.
6
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the engine switch 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 the next step.
No
Go to the next step.
7
VERIFY TROUBLESHOOTING OF DTC P2452 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 PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.