P0151 2016 Chevrolet Silverado Code - HO2S Circuit Low Voltage Bank 2 Sensor 1
Quick Answer
The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 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
- P0151 2016 Chevrolet Silverado indicates HO2S Circuit Low Voltage Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 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 P0151 2016 Chevrolet Silverado Description
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed Loop earlier and the ECM to calculate the air-to-fuel ratio sooner.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the heated oxygen sensor is shorted to ground if the HO2S voltage is less than 50 mV.
What are the Possible Causes of the DTC P0151 2016 Chevrolet Silverado?
- Faulty Front Heated Oxygen Sensor Bank 2
- Front Heated Oxygen Sensor Bank 2 harness is open or shorted
- Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Low or high fuel system pressure
- Fuel contamination
- Faulty fuel injectors
- Exhaust gas leaks
- Engine vacuum leaks
How to Fix the DTC P0151 2016 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 P0151 2016 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 P0151 2016 Chevrolet Silverado Code
1. What does the OBDII code P0151 mean for a 2016 Chevrolet Silverado?
It means the oxygen sensor (HO2S) for Bank 2 Sensor 1 is reporting a low voltage, indicating a possible fuel mixture issue or sensor malfunction.
2. What are the symptoms of a P0151 code on a 2016 Chevrolet Silverado?
Symptoms may include poor fuel economy, reduced engine performance, rough idling, and the check engine light turning on.
3. What causes the P0151 code in a 2016 Chevrolet Silverado?
Common causes include a faulty oxygen sensor, wiring issues, exhaust leaks, or a problem with the engine control module (ECM).
4. How can I diagnose the P0151 code on my 2016 Chevrolet Silverado?
You can use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, check for exhaust leaks, and test the oxygen sensor for proper function.
5. Can I still drive my 2016 Chevrolet Silverado with a P0151 code?
While it may be possible to drive, prolonged operation with this code can lead to reduced fuel efficiency and potential damage to the catalytic converter.
6. How is the P0151 code fixed on a 2016 Chevrolet Silverado?
Repairs may involve replacing the Bank 2 Sensor 1 oxygen sensor, repairing damaged wiring, fixing exhaust leaks, or updating the ECM software.
7. How much does it cost to fix a P0151 code on a 2016 Chevrolet Silverado?
Repair costs vary but typically range from $150 to $400, depending on whether the oxygen sensor needs replacing or additional repairs are required.
8. Where is Bank 2 Sensor 1 located on a 2016 Chevrolet Silverado?
Bank 2 refers to the side of the engine opposite the #1 cylinder, and Sensor 1 is the upstream oxygen sensor located before the catalytic converter.
9. Can a dirty air filter cause the P0151 code on a 2016 Chevrolet Silverado?
A dirty air filter can affect the air-fuel ratio, potentially contributing to issues that trigger this code, though it’s not the most common cause.
10. Will clearing the P0151 code solve the problem on a 2016 Chevrolet Silverado?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.
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