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DTC P0131, P0151 A/F SENSOR 1 EC-957 [VK45DE] C D E F G H I J K L M A EC DTC P0131, P0151 A/F SENSOR 1 PFP:22693 Component Description NBS005DX The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen- < air). The exhaust gas components diffuse through the diffusion gap at the An electronic circuit controls the pump current through the oxygen- ° C (1,292 - 1,472 ° F). CONSULT-II Reference Value in Data Monitor Mode NBS005DY Specification data are reference values. On Board Diagnosis Logic NBS005DZ To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 DTC Confirmation Procedure NBS005E0 NOTE: WITH CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II. SEF579Z SEF580Z MONITOR ITEM CONDITION SPECIFICATION A/F SEN1 (B1) ● Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 1.5 V DTC No. Trouble diagnosis name DTC detecting condition Possible Cause P0131 Air fuel ratio (A/F) sensor 1 ● The A/F signal computed by ECM from the ● Harness or connectors ● A/F sensor 1 P0151 |