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Home >> Dodge or Ram Truck >> 2000 >> RAM 1500 Truck 2WD V6-3.9L VIN X >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Checking Oxygen Sensor Heater

Checking Oxygen Sensor Heater

Tests 1 - 3:




Test 4:





SYMPTOM
* CHECKING THE OXYGEN SENSOR HEATER

POSSIBLE CAUSES
- ASD relay output circuit open
- Heater ground circuit open
- O2 sensor

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