P open circuit between AA and AA

Duration while all following conditions met

20 seconds or more

A1A+ terminal voltage

0.5 to 4.5 V

A1A- terminal voltage

0.5 to 4.5 V

Difference between A1A+ and A1A- terminal voltages

0.1 to 0.8 V


8°C (46°F) or more: closed loop fuel control enable temperature

Engine condition


Time after engine start

20 seconds or more


OFF (for 25 seconds or more)

A/F sensor heater duty ratio

0 % or more

Time after A/F sensor heating

20 seconds or more

Battery voltage

10.5 V or more

Ignition switch

ON (for 5 seconds or more)

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