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DTC P2A00, P2A03 A/F SENSOR 1 EC-1365 [VK45DE] C D E F G H I J K L M A EC DTC P2A00, P2A03 A/F SENSOR 1 PFP:22693 Component Description NBS005PD 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 NBS005PE Specification data are reference values. On Board Diagnosis Logic NBS005PF To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be DTC Confirmation Procedure NBS005PG NOTE: WITH CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CON- 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 P2A00 Air fuel ratio (A/F) sensor 1 ● The output voltage computed by ECM from the ● The A/F signal computed by ECM from the A/F ● A/F sensor 1 ● A/F sensor 1 heater ● Fuel pressure ● Fuel injector ● Intake air leaks P2A03 |