O2S Test Result

Refer to PRE-CHECK  for detailed information.

Front HO2S slope monitor 

The HO2S sensor voltage is out of the standard value, the ECM interprets this as a malfunction.

Fig 1: Front HO2S Slope Monitor Chart (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the time required to change is out of the standard value, the ECM interprets this as a malfunction.

Fig 2: Front HO2S Slope Monitor Chart (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front HO2S frequency monitor (idling) 

If the $38 is out of the standard value, the ECM interprets this as a malfunction.

Fig 3: Front HO2S Frequency Monitor Chart (Idling)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front HO2S frequency monitor (cruse) 

If the $90 is out of the standard value, the ECM interprets this as a malfunction.

Fig 4: Front HO2S Frequency Monitor Chart (Cruise)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002