Condition for fault identification

Test condition:

The fault is recognized when the actual internal resistance of the heater for the oxygen sensor behind the catalytic converter remains higher than expected for a specified period of time.

Potential problem source(s):

• Defective wiring harness
• Oxygen sensor behind catalytic converter defective

Terminal condition: none

Voltage condition:

• Onboard electrical system voltage between 9 V and 16 V

Temperature condition:

• None

Time condition:

• Engine off for longer than 13 min.

Other conditions:

• Engine ON