DTC Description

DTC DETECTION LOGIC

DTC		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
P044B	00	EGR SENSOR C (EGR Sensor "C" Circuit Range/Performance)	Diagnosis condition	After warming up, switch OFF the ignition every time the engine is stopped.
			Signal (terminal)	―
			Threshold	When EGR volume control valve is fully closed or fully opened, sensor output is out of the specified range.
			Diagnosis delay time	3 seonds or more

POSSIBLE CAUSE

EGR volume control valve failure (sensor failure, internal gear damage, valve movement is not smooth)

FAIL-SAFE

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Traveling control mode

Accelerator angle variation control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.

note	ECM does not control the accelerator pedal releasing speed.

Device fix mode

This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position.
The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).
A control signals is not transmitted to EGR volume control valve and the EGR volume control is deactivated.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

Turn ignition switch OFF and wait at least 10 seconds.
Turn ignition switch ON.
Turn ignition switch OFF and wait at least 10 seconds.

2.PERFORM DTC CONFIRMATION PROCEDURE

Start the engine and warm it up to normal operating temperature.
Stop the engine.
Switch ON the ignition and wait at least 3 seconds.

Is the DTC detected?

Proceed to Diagnosis Procedure

-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident

-2Confirmation after repair: INSPECTION END