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DTC P2A00, P2A03 A/F SENSOR 1 EC-1129 < SERVICE INFORMATION > [VK45DE] C D E F G H I J K L M A EC N P O DTC P2A00, P2A03 A/F SENSOR 1 Component Description INFOID:0000000001327032 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-III Reference Value in Data Monitor Mode INFOID:0000000001327033 Specification data are reference values. On Board Diagnosis Logic INFOID:0000000001327034 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 INFOID:0000000001327035 NOTE: WITH CONSULT-III 1. Start engine and warm it up to normal operating temperature. 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 A/F sensor 1 signal is shifted to the lean side for • The A/F signal computed by ECM from the A/F sensor 1 signal is shifted to the rich side for a • A/F sensor 1 P2A03 |