P0059 2017 GMC Sierra Code - HO2S Heater Resistance Bank 2 Sensor 1
Quick Answer
Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0059 2017 GMC Sierra indicates HO2S Heater Resistance Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0059 2017 GMC Sierra Description
The Diagnostic Trouble Code (DTC) will be set when the ECM detects the HO2S heater is not within a specified resistance range at engine start-up.
What are the Possible Causes of the DTC P0059 2017 GMC Sierra?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1
- Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted
- Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor Bank 2 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0059 2017 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0059 2017 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0059 2017 GMC Sierra Code
What does the OBDII code P0059 mean on a 2017 GMC Sierra?
P0059 indicates an issue with the heater circuit resistance in the heated oxygen sensor (HO2S) for Bank 2 Sensor 1, typically related to improper function or resistance outside the expected range.
What are the symptoms of P0059 on a 2017 GMC Sierra?
Symptoms can include a check engine light, increased fuel consumption, rough idling, or poor engine performance.
What causes the P0059 code to appear on a 2017 GMC Sierra?
Common causes include a faulty oxygen sensor, damaged or corroded wiring, a failed HO2S heater circuit, or an issue with the powertrain control module (PCM).
How do I diagnose the P0059 code on my 2017 GMC Sierra?
Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the oxygen sensor and wiring, and testing the resistance of the sensor's heater circuit with a multimeter.
Can I drive my 2017 GMC Sierra with the P0059 code?
While the vehicle may still be drivable, ignoring the code can lead to reduced fuel efficiency and potential damage to other engine components over time.
How do I fix the P0059 code on a 2017 GMC Sierra?
Repairs may include replacing the faulty oxygen sensor, repairing or replacing damaged wiring, or addressing issues with the PCM if necessary.
How much does it cost to fix the P0059 code on a 2017 GMC Sierra?
Costs vary, but replacing the oxygen sensor typically ranges from $150 to $300, including parts and labor. Wiring repairs or PCM replacement may increase costs.
Is the P0059 code specific to the 2017 GMC Sierra?
No, P0059 is a generic OBDII code that can appear on various vehicles, but its symptoms and causes may vary depending on the make and model.
What tools are needed to troubleshoot the P0059 code on a 2017 GMC Sierra?
You’ll need an OBDII scanner, a multimeter for resistance testing, and possibly basic tools for removing and replacing the oxygen sensor.
What is Bank 2 Sensor 1 in the P0059 code for a 2017 GMC Sierra?
Bank 2 refers to the side of the engine opposite Cylinder 1, and Sensor 1 is the oxygen sensor located upstream, before the catalytic converter.
Discuss the causes and fixes for P0059 2017 GMC Sierra OBDII Code
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