Heated Oxygen Sensor Heater Resistance (Bank 2, Sensor 1)
The P0059 code means the vehicle's onboard diagnostic system has detected: Heated Oxygen Sensor Heater Resistance (Bank 2, Sensor 1). This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $75 - $250 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Slightly reduced fuel economy
- Delayed O2 sensor warm-up on Bank 2
- Possible emissions failure
Probable Causes (Ranked by Likelihood)
- Degraded O2 sensor heater element Very High
- Corroded wiring or connector High
- Incorrect replacement sensor installed Moderate
- ECM heater driver issue Low
Step-by-Step Diagnostic Procedure
-
Confirm P0059 and locate Bank 2 Sensor 1
-
Measure heater resistance at sensor connector
-
Compare to manufacturer specification
-
Inspect wiring for corrosion or breaks
Frequently Asked Questions
What does P0059 mean?
P0059 means the heater resistance in the Bank 2 Sensor 1 oxygen sensor is outside the expected range, indicating a degrading heater element.
Is P0059 the same as P0053?
They are the same type of fault but on different banks. P0053 is Bank 1 Sensor 1 and P0059 is Bank 2 Sensor 1.
Can I replace the sensor myself?
Yes, O2 sensor replacement is a common DIY repair. You need an O2 sensor socket and the correct replacement part for your vehicle.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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