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P0420
2015 Toyota Camry
Toyota
Severity
Medium
Safe to Drive
Yes
Est. Time
2hrs
Difficulty
Moderate
SYMPTOM
Check engine light after highway driving
Why This Happens
Toyota's catalyst monitor is highly sensitive to converter efficiency loss, and this model has a documented pattern of the converter itself wearing out before the sensors do.
VERIFIED FIX:
Catalytic converter replaced
How It Was Diagnosed
Toyota's catalyst monitor is highly sensitive to converter efficiency loss, and this model has a documented pattern of the converter itself wearing out before the sensors do.
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