P1153 2015 GMC Sierra Code - HO2S Insufficient Switching Bank 2 Sensor 1
Quick Answer
The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open or shorted, Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1153 2015 GMC Sierra indicates HO2S Insufficient Switching Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open or shorted, Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1153 2015 GMC Sierra 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 rich-to-lean counts or the lean-to-rich counts are less than a calibrated value greater than 100s.
What are the Possible Causes of the DTC P1153 2015 GMC Sierra?
- Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
- Heated Oxygen Sensor Bank 2 Sensor 1 harness is open or shorted
- Heated Oxygen Sensor Bank 2 Sensor 1 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 P1153 2015 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 P1153 2015 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 P1153 2015 GMC Sierra Code
1. What does the OBDII code P1153 mean on a 2015 GMC Sierra?
P1153 indicates "HO2S Insufficient Switching Bank 2 Sensor 1," meaning the oxygen sensor on Bank 2 (upstream) is not switching between rich and lean as expected.
2. What are the symptoms of code P1153 on a 2015 GMC Sierra?
Common symptoms include poor fuel economy, reduced engine performance, rough idling, and the check engine light being illuminated.
3. What causes the P1153 code on a 2015 GMC Sierra?
Potential causes include a faulty oxygen sensor, exhaust leaks, a damaged or corroded sensor connector, or engine issues like a vacuum leak or fuel injector problem.
4. Which sensor is affected by the P1153 code on a 2015 GMC Sierra?
The sensor affected is the upstream oxygen sensor (Bank 2 Sensor 1), located before the catalytic converter on the side of the engine opposite Cylinder 1.
5. Can I drive my 2015 GMC Sierra with the P1153 code?
You can drive the vehicle, but it is not recommended for extended periods since the issue can lead to increased emissions, poor fuel efficiency, and potential damage to the catalytic converter.
6. How can I diagnose the P1153 code on my 2015 GMC Sierra?
Start by checking the wiring and connections for the Bank 2 Sensor 1 oxygen sensor, inspect for exhaust leaks, and use a scan tool to monitor oxygen sensor voltage and switching activity.
7. How do I fix the P1153 code on a 2015 GMC Sierra?
Repairs may include replacing the Bank 2 Sensor 1 oxygen sensor, repairing faulty wiring, fixing exhaust leaks, or addressing any underlying engine issues like a vacuum leak.
8. How much does it cost to fix the P1153 code on a 2015 GMC Sierra?
Replacing the oxygen sensor typically costs $150–$300, depending on parts and labor. Additional repairs, such as fixing exhaust leaks, may increase the cost.
9. Can a dirty air filter cause the P1153 code on a 2015 GMC Sierra?
While a dirty air filter is unlikely to directly cause P1153, it can contribute to engine performance issues that may affect oxygen sensor readings.
10. Do I need to replace both oxygen sensors if I have the P1153 code on my 2015 GMC Sierra?
No, you only need to replace the affected sensor (Bank 2 Sensor 1), unless diagnostic tests show issues with other sensors as well.
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