P0037 2017 GMC Sierra Code - HO2S Heater Control Circuit Low Voltage Bank 1 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 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 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
- P0037 2017 GMC Sierra indicates HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 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 P0037 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 P0037 2017 GMC Sierra?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground
- Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
- Heated Oxygen Sensor Bank 1 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0037 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 P0037 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 P0037 2017 GMC Sierra Code
What does the OBDII code P0037 mean on a 2017 GMC Sierra?
P0037 indicates a low voltage issue in the HO2S (Heated Oxygen Sensor) Heater Control Circuit for Bank 1 Sensor 2, which monitors the exhaust downstream of the catalytic converter.
What are the symptoms of code P0037 in a 2017 GMC Sierra?
Common symptoms include an illuminated check engine light, reduced fuel efficiency, and potential difficulty passing an emissions test.
What causes the P0037 code in a 2017 GMC Sierra?
Possible causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning powertrain control module (PCM).
Can I drive my 2017 GMC Sierra with a P0037 code?
While the vehicle may still be drivable, ignoring the issue could lead to increased emissions, reduced fuel economy, and potential damage to other components.
How do I diagnose the P0037 code on a 2017 GMC Sierra?
Check the oxygen sensor's wiring and connectors for damage, test the sensor's resistance with a multimeter, and inspect the fuse for the HO2S heater circuit.
How is the P0037 code fixed in a 2017 GMC Sierra?
Repairs may include replacing the oxygen sensor, repairing damaged wiring, replacing a blown fuse, or addressing issues with the PCM.
How much does it cost to fix code P0037 on a 2017 GMC Sierra?
The cost can range from $100 to $300, depending on whether the oxygen sensor, wiring, or other components require replacement.
Can a P0037 code cause other problems in my 2017 GMC Sierra?
While it primarily affects emissions and fuel economy, prolonged issues could strain the catalytic converter or other emissions-related systems.
How do I prevent a P0037 code from occurring again?
Regularly inspect the oxygen sensor and its wiring, and address any exhaust system issues promptly to prevent damage to the sensor.
Is a special tool required to fix the P0037 code on a 2017 GMC Sierra?
Basic tools like a multimeter and an oxygen sensor socket are often sufficient, but an OBDII scanner is necessary to confirm the code and reset the check engine light.
Discuss the causes and fixes for P0037 2017 GMC Sierra OBDII Code
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