Code No. P2413: EGR System Performance

OPERATION

Refer to Code No. P0403: EGR Valve DC Motor Malfunction

FUNCTION

The engine-ECU performs duty control over the EGR valve (DC motor).
The engine-ECU performs feedback control over the EGR valve based on the signals from the EGR position sensor.

TROUBLE JUDGEMENT

Check Condition

Ignition switch is in "ON" position

Judgement Criterion

The EGR valve in sticking state (a high duty state continues for the predetermined time or more) is repeatedly detected.

FAIL-SAFE AND BACKUP FUNCTION

The EGR control is stopped (fully closed).
The DPF regeneration is prohibited.
The throttle valve is opened (electrical discontinuity).
The NPG/SPG control is stopped.
The small injection quantity learning is prohibited.

PROBABLE CAUSES

Failed EGR valve
Open/short circuit in EGR valve circuit or loose connector contact
Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Q. Is any other diagnosis code than P2413 output?

	Inspection chart for diagnosis codes (Refer to ).

	Go to Step 2.

STEP 2. Check EGR valve assembly itself.

Check EGR valve assembly itself [Refer to GROUP 17 - Emission Control <DIESEL> - Exhaust Gas Recirculation (EGR) System - EGR Valve (DC Motor) Check ].

Q. Is the check result normal?

	Go to Step 3.

	Replace the EGR valve assembly.

STEP 3. Check of open circuit, short to earth, and damage in EGR+ line between engine-ECU connector and EGR valve assembly connector.

Q. Is the check result normal?

	Go to Step 4.

	Repair the connector(s) or wiring harness.

STEP 4. Check of open circuit, short to earth, and damage in EGR- line between engine-ECU connector and EGR valve assembly connector.

Q. Is the check result normal?

	Go to Step 5.

	Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III diagnosis code.

After erasing the diagnosis code through M.U.T.-III, start the engine and confirm whether the diagnosis code is set.

Q. Is the diagnosis code set?

	Replace the engine-ECU.

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions).