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EC-1134 [YD (WITH EURO-OBD)] DTC P0401 EGR FUNCTION CONSULT-II Reference Value in Data Monitor Mode EBS013DI Specification data are reference values. ECM Terminals and Reference Value EBS013DJ Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- On Board Diagnosis Logic EBS013DK MONITOR ITEM CONDITION SPECIFICATION EGR VOL CON/V ● Engine: After warming up ● Air conditioner switch: OFF ● Shift lever: Neutral position ● No-load After 1 minute at idle More than 10 steps Revving engine from idle to 3,600 0 step TERMI- NAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 25 GY EGR volume control valve [Engine is running] ● Warm-up condition ● Idle speed 0.1 - 14V DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0401 Exhaust gas recirculation flow The exhaust gas recirculation flow is ● Harness or connectors ● EGR volume control valve stuck closed ● EGR passage clogged |