P0059Low SeverityEmissions

HO2S Heater Resistance (Bank 2, Sensor 1)

What This Means

The upstream oxygen sensor heater resistance on bank 2 is outside the expected range. The heater element may be degrading or have a wiring resistance issue.

Common Symptoms

Check engine light on
Extended warm-up period
Minor emissions impact
May fail emissions test

Common Causes

Aging heater element
High resistance connections
Corroded pins
Wiring degradation
Sensor age

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.