P0053Low SeverityEmissions

HO2S Heater Resistance (Bank 1, Sensor 1)

What This Means

The oxygen sensor heater resistance on bank 1, sensor 1 is outside the expected range. The heater element may be partially failed or have a resistance issue.

Common Symptoms

Check engine light on
Slow sensor warm-up
Minor emissions impact
May fail emissions test

Common Causes

Aging O2 sensor heater
High resistance in wiring
Corroded connector pins
Partially failed heater element
Poor ground connection

Estimated Repair Cost

$100 – $350

Parts and labor (varies by vehicle and location)

Difficulty:Easy

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.