FixVault

Scan Tester Procedure

Access scan tester service data item No. 11. Tester should display sensor voltage. Ensure engine is at normal operating temperature. See HO2S OPERATING VOLTAGE SPECIFICATIONS  table.

HO2S OPERATING VOLTAGE SPECIFICATIONS

Engine RPM Output (Volts)
750 .4 Or Less
2000 .6-1.0
4000 To 750 (1) .2 Or Less
750 To 4000 (2) .6-1.0
(1) Sudden deceleration.
(2) Sudden acceleration.