P0057 2017 GMC Sierra Code - HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2
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 2, Heated Oxygen Sensor Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0057 2017 GMC Sierra indicates HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 2 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0057 2017 GMC Sierra Description
The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to ground in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s.
What are the Possible Causes of the DTC P0057 2017 GMC Sierra?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2
- Heated Oxygen Sensor Bank 2 Sensor 2 harness is open shorted
- Heated Oxygen Sensor Bank 2 Sensor 2 circuit poor electrical connection
- Heated Oxygen Sensor Bank 2 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0057 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 P0057 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 P0057 2017 GMC Sierra Code
What does OBDII code P0057 mean on a 2017 GMC Sierra?
1. P0057 indicates an issue with the HO2S (Heated Oxygen Sensor) Heater Control Circuit Low Voltage for Bank 2 Sensor 2, which is the downstream oxygen sensor on the side of the engine opposite cylinder 1. 2.
What are the common symptoms of code P0057 on a 2017 GMC Sierra?
Symptoms may include an illuminated check engine light, poor fuel efficiency, failed emissions tests, or no noticeable symptoms in some cases. 3.
What causes the P0057 code on a 2017 GMC Sierra?
Common causes include a faulty downstream oxygen sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning PCM (Powertrain Control Module). 4.
How do I diagnose the P0057 code on my 2017 GMC Sierra?
Start by inspecting the oxygen sensor wiring and connectors for damage. Use a multimeter to test the sensor's resistance and voltage. Check the fuse for the sensor circuit and verify the heater circuit operation. 5.
Can I drive my 2017 GMC Sierra with the P0057 code?
While the truck may still be drivable, ignoring the issue could lead to reduced fuel efficiency, potential damage to the catalytic converter, or failed emissions tests. 6.
How do I fix the P0057 code on a 2017 GMC Sierra?
Repairs may include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, replacing a blown fuse, or reprogramming or replacing the PCM if necessary. 7.
How much does it cost to fix the P0057 code on a 2017 GMC Sierra?
Repair costs vary, but replacing an oxygen sensor typically ranges from $150 to $300, including parts and labor. Wiring repairs or PCM replacement may cost more. 8.
Which oxygen sensor does Bank 2 Sensor 2 refer to on the 2017 GMC Sierra?
Bank 2 Sensor 2 is the downstream oxygen sensor located after the catalytic converter on the side of the engine opposite cylinder 1. 9.
Can a bad oxygen sensor cause the P0057 code on a 2017 GMC Sierra?
Yes, a faulty downstream oxygen sensor is a common cause of this code, as it may fail to heat properly due to internal issues. 10.
Will clearing the P0057 code fix the problem on a 2017 GMC Sierra?
Clearing the code may turn off the check engine light temporarily, but the issue will return if the underlying problem is not resolved.
Discuss the causes and fixes for P0057 2017 GMC Sierra OBDII Code
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