P0152 Chevrolet Code - HO2S Circuit High 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
- P0152 Chevrolet indicates HO2S Circuit High 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 P0152 Chevrolet 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 HO2S voltage is greater than 1, 050 mV.
What are the Possible Causes of the DTC P0152 Chevrolet?
- 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 P0152 Chevrolet?
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 P0152 Chevrolet 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.
Need more information about the P0152 Chevrolet code?
Need more information on how to fix the P0152 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0152 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Information for Specific Chevrolet Models
- P0152 2014 Chevrolet Silverado — HO2S Circuit High Voltage Bank 2 Sensor 1
- P0152 2015 Chevrolet Silverado — HO2S Circuit High Voltage Bank 2 Sensor 1
- P0152 2016 Chevrolet Silverado — HO2S Circuit High Voltage Bank 2 Sensor 1
- P0152 2017 Chevrolet Silverado — HO2S Circuit High Voltage Bank 2 Sensor 1
- P0152 2018 Chevrolet Silverado — HO2S Circuit High Voltage Bank 2 Sensor 1
Frequently Asked Questions about P0152 Chevrolet Code
What does the OBDII code P0152 mean in a Chevrolet?
P0152 indicates that the oxygen sensor (HO2S) on Bank 2 Sensor 1 is detecting higher voltage than expected, suggesting a rich fuel mixture.
What are the symptoms of code P0152 in a Chevrolet?
Common symptoms include a lit check engine light, poor fuel economy, rough idling, black exhaust smoke, or a sulfur smell from the exhaust.
What causes the P0152 code in a Chevrolet?
Potential causes include a faulty oxygen sensor, a shorted signal wire, a rich-running engine, a malfunctioning fuel injector, or a defective powertrain control module (PCM).
How do I diagnose the P0152 code in my Chevrolet?
Start by inspecting the Bank 2 Sensor 1 wiring and connector for damage. Then, use a scan tool to monitor live data from the oxygen sensor and confirm if the voltage remains high.
Can a dirty air filter cause the P0152 code?
Yes, a dirty air filter can reduce airflow to the engine, causing it to run rich and potentially triggering the P0152 code.
Is it safe to drive with the P0152 code in my Chevrolet?
While the vehicle might still be drivable, continuing to drive with this code can lead to increased emissions, poor performance, and potential damage to the catalytic converter.
How do you fix the P0152 code in a Chevrolet?
Repairs may include replacing the oxygen sensor, repairing wiring issues, inspecting the fuel system, or cleaning/replacing a dirty air filter.
Can a bad PCM cause the P0152 code?
While rare, a faulty PCM could cause the P0152 code if it fails to properly process oxygen sensor signals.
How much does it cost to fix the P0152 code?
The repair cost depends on the root cause, but replacing an oxygen sensor typically costs between $150 and $400, including parts and labor.
What tools are needed to diagnose the P0152 code?
You’ll need an OBDII scanner, a multimeter to check wiring and voltage, and possibly a fuel pressure gauge to test the fuel system.
Discuss the causes and fixes for P0152 Chevrolet OBDII Code
Code P0152 Chevrolet comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
