OBD II Fault Code P0053 :

Description of Fault code P0053

A/F SENSOR HEATER RESISTANCE MALFUNCTION

Possible failuer P0053

• A/F sensor malfunction.

Diagnostic Procedure using AutoHex II Scan Tool

• A/F sensor heater temperature does not reach about 720 ºC even though A/F sensor heater is energized during 60 seconds and more.

Test Conditions using AutoHex tester

• Engine running.
• A/F SENSOR HEATER TEMPERATURE > 680 ºC or A/F SENSOR DUTY ≥ 98%
• BATTERY voltage ≥ 10.7V

Clear Fault codes Conditions

• A/F sensor heater temperature does not reach about 720 ºC even though A/F sensor heater is energized during 60 seconds and more.

MIL Status

• Check Engine Light ON

Note:

• AutoHex II is a professional Auto diagnostic.
• This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
  To get the accurate fault code description you may use AutoHex II

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