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DTC P0139, P0159 HO2S2 EC-857 < SERVICE INFORMATION > [VK45DE] C D E F G H I J K L M A EC N P O Diagnosis Procedure INFOID:0000000001326695 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten three ground screws on the body. OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CLEAR THE SELF-LEARNING DATA With CONSULT-III 1. Start engine and warm it up to normal operating temperature. 2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III. 3. Clear the self-learning control coefficient by touching “CLEAR”. 4. Run engine for at least 10 minutes at idle speed. Without CONSULT-III 1. Start engine and warm it up to normal operating temperature. 2. Turn ignition switch OFF. TER- MI- NAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 25 P Heated oxygen sensor 2 [Engine is running] lowing conditions are met - Engine: After warming up and 4,000 rpm for 1 minute and at idle for 1 0 - 1.0V [Ignition switch: ON] BATTERY VOLTAGE 74 LG/B Heated oxygen sensor 2 [Engine is running] ly after the following conditions are met - Engine: After warming up 3,500 and 4,000 rpm for 1 minute and at idle 0 - Approximately 1.0V 78 B/R Sensor ground [Engine is running] Approximately 0V PBIB2195E |