On this episode of Fear No Fix, Chris and Jordan break down how to diagnose O2 Sensor issues.
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Top DTCs (Diagnostic Trouble Codes) associated with O2 Sensors:
• Heater Control Circuit - P0030, P0031, P0032, P0036, P0037, P0038
• Heater Resistance - P0053, P0054
• O2 Sensor Circuit - P0133, P0139, P0140
• Sensor Heater Circuit - P0135, P0141
• System Too Lean - P0171
• System Too Rich - P0172
• Catalyst System Efficiency - P0420
Top symptoms associated with O2 Sensors:
• Check Engine Light
• Reduced Fuel Economy
• Reduced Engine Performance
• Rough Idle
• Exhaust Odor
• Black Exhaust Smoke
• Failed Emission Test
• Engine Misfire
• Engine Over Heating
• Catalytic Converter Damage
Video Sections:
Intro: (0:00)
Visual Inspections (1:51)
Testing Heater Circuit (4:10)
Live Data on Older Sensors (7:28)
Introducing a Lean Condition (10:44)
Live Data on Newer Sensors (12:00)
Replacing O2 Sensors (14:36)
Outro (18:02)