P0051 2017 Chevrolet Silverado Code - HO2S Heater Control Circuit Low Voltage 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 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
- P0051 2017 Chevrolet Silverado indicates HO2S Heater Control Circuit Low Voltage 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
- 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 P0051 2017 Chevrolet Silverado 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 P0051 2017 Chevrolet Silverado?
- 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 fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0051 2017 Chevrolet Silverado?
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 P0051 2017 Chevrolet Silverado 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 P0051 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P0051 on a 2017 Chevrolet Silverado?
- Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light.
2. What does the OBDII code P0051 mean on a 2017 Chevrolet Silverado?
- OBDII code P0051 indicates a malfunction in the HO2S (Heated Oxygen Sensor) heater control circuit for Bank 2 Sensor 1, signaling low voltage.
3. What are the possible causes of OBDII code P0051 on a 2017 Chevrolet Silverado?
- Common causes include a faulty HO2S sensor, damaged wiring or connectors, a blown fuse, or a problem with the ECM (Engine Control Module).
4. How can I diagnose OBDII code P0051 on my 2017 Chevrolet Silverado?
- Diagnose the code by checking the wiring and connectors for damage, testing the HO2S sensor resistance, and confirming proper voltage supply to the sensor.
5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P0051?
- It is not recommended to drive with OBDII code P0051, as it can lead to decreased engine performance and potential damage if left unresolved.
6. How can I repair OBDII code P0051 on a 2017 Chevrolet Silverado?
- Repair options include replacing the HO2S sensor, repairing or replacing damaged wiring or connectors, checking and replacing fuses if necessary, and resetting the fault code.
7. Is it possible to clear OBDII code P0051 on a 2017 Chevrolet Silverado without fixing the issue?
- While you can clear the code with a diagnostic tool, the underlying issue causing the fault must be addressed to prevent the code from reoccurring.
8. Can extreme weather conditions affect OBDII code P0051 on a 2017 Chevrolet Silverado?
- Yes, extreme cold or hot weather can impact the performance of the HO2S sensor and its heater, potentially triggering code P0051.
9. How long does it typically take to repair OBDII code P0051 on a 2017 Chevrolet Silverado?
- The repair time for OBDII code P0051 can vary depending on the exact cause, but it can usually be resolved within a few hours to a day.
10. Will OBDII code P0051 cause my 2017 Chevrolet Silverado to fail an emissions test?
- Yes, OBDII code P0051 can cause your vehicle to fail an emissions test due to its impact on the proper functioning of the oxygen sensor.
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