EGR System Monitor

OBD System Description - EGR System Monitor

System Description / Monitoring Procedure
To monitor electric controlled EGR system, the system measures pressure change caused by switching of the EGR valve during constant speed condition and also measures the voltage of EGR valve stepping motor electrical circuit continuously.

EGR System Monitoring System:

EGR system monitoring system

DTC Description / Detecting Condition / Confirmation Procedure

P0401, P0402
Refer to DTC P0401 / P0402: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected / Excessive Detected:H25 Engine.

P0403
Refer to DTC P0403: Exhaust Gas Recirculation (EGR) Control Circuit:H25 Engine.

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

EGR System Monitor

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

EGR System Circuit Monitor

Mode $06 Data:

MODE $06 Data