Code result
P0053
HO2S Heater Resistance
Moderate severity
What it means
The heater resistance of the bank 1, sensor 1 oxygen sensor is outside its specified range. Sensor heater aging or short between heater and signal.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Heater element aged, resistance high
highOne of the most commonly reported causes for this code — check this first.
Oxygen sensor failed
mediumA plausible cause — test and verify before replacing parts.
Related help
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