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What do you if your 2000 Nissan Pathfinder check engine light is on but a scan shows no fault?

Possible reasons for a check engine light with no codes:

- Faulty O2 sensor (oxygen sensor)

- Faulty catalytic converter

- Faulty fuel injector

- Faulty ignition coil

- Faulty air flow meter

- Faulty throttle position sensor

- Vacuum leaks

- Faulty EVAP system

- Faulty PCV valve

- Faulty fuel pressure regulator

- Faulty coolant temperature sensor

- Faulty knock sensor

- Faulty crankshaft position sensor

If you are unable to identify the cause of the check engine light, take your vehicle to a qualified mechanic for diagnosis.

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