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Home >> Jeep >> 2000 >> Cherokee 2WD L4-2.5L VIN P >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Checking Oxygen Sensor Heater
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Checking Oxygen Sensor Heater

Tests 1 - 4:





SYMPTOM
CHECKING THE OXYGEN SENSOR HEATER

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