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P0059

HO2S Heater Resistance Bank 2 Sensor 1

Heater resistance out of range on bank 2 sensor 1 (pre-cat). Same diagnostic as P0053 on the second bank.

  • Check engine light: Yes
  • Emissions related: Yes
  • Repair difficulty: easy

Common causes

Ordered by how often each turns out to be the cause.

  • Heater element agedCommon

Parts involved

  • Oxygen Sensor B2s1

P0059 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.