Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC) » P0031, P0032 A/F sensor 1 heater
Component Inspection

1.CHECK AIR FUEL RATIO (A/F) SENSOR 1

  1. Turn ignition switch OFF.
  2. Disconnect A/F sensor 1 harness connector.
  3. Check resistance between A/F sensor 1 terminals as follows.

CHECK AIR FUEL RATIO (A/F) SENSOR 1

Is the inspection result normal?

YES >> INSPECTION END

NO >> GO TO 2.

2.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace malfunctioning air fuel ratio (A/F) sensor 1. Refer to EM, "Exploded View".

CAUTION:

  • Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
  • Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner [commercial service tool (J4389718 or J4389712)] and approved antiseize lubricant (commercial service tool).

>> INSPECTION END

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