DTC P1303:00 [MZR-CD 2.2]


id0102f3149100

DTC P1303:00

EGR calibration fault

DETECTION CONDITION
•  The PCM monitors the EGR valve position using EGR position sensor when switch the ignition from on to off position. The EGR valve position sensor signal voltage is more than 1.2 V or less than 0.65 V, the PCM determines that the EGR valve offset is out of range.
Diagnostic support note
•  The MIL does not illuminate.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
•  The DTC is not stored in the PCM memory.
POSSIBLE CAUSE
•  Improper operation of EGR valve
•  EGR valve position sensor malfunction
―  EGR valve position sensor signal voltage intermittent fault
•  Supply pump malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
INSPECT EGR VALVE OPERATION
•  Perform the EGR Valve Operation Inspection.
•  Does the EGR valve operate properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results, then go to Step 4.
3
INSPECT EGR VALVE POSITION SENSOR
•  Access the EGRP PID with % and V mode.
•  Move the EGR valve using the EGRP PID % active command mode function.
•  Monitor the EGRP PID V mode.
•  Does the EGRP PID V mode moves according to the EGR valve actuate value?
Yes
Intermittent concern exists.
•  Perform the “INTERMITTENT CONCERN TROUBLESHOOTING” procedure.
No
Replace the supply pump, then go to the next step.
4
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Perform the DTC Reading Procedure.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
5
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.