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P0135
2017 Ford Escape
Ford
Severity
Low
Safe to Drive
Yes
Est. Time
45min
Difficulty
Easy
SYMPTOM
Check engine light, no noticeable performance change
Why This Happens
The O2 sensor heater helps the sensor reach operating temperature quickly; when it fails, the sensor can't function correctly until the exhaust naturally heats it up.
VERIFIED FIX:
Upstream O2 sensor replaced
How It Was Diagnosed
The O2 sensor heater helps the sensor reach operating temperature quickly; when it fails, the sensor can't function correctly until the exhaust naturally heats it up.
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