P0159 Chevrolet Code - HO2S22 slow response sensor
Quick Answer
The Powertrain Control Module (PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits. Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear 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
- P0159 Chevrolet indicates HO2S22 slow response sensor .
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear 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 P0159 Chevrolet Description
The PCM monitors and stores the heated oxygen sensor (HO2S) voltage information. The PCM evaluates the HO2S voltage samples in order to determine the amount of time the HO2S voltage was out of range. The PCM compares the stored HO2S voltage samples taken within each sample period and determines if majority of the samples are out of the operating range.
What are the Possible Causes of the DTC P0159 Chevrolet?
- Faulty Rear Heated Oxygen Sensor Bank 2
- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P0159 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0159 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 P0159 Chevrolet code?
Need more information on how to fix the P0159 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0159 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0159 Chevrolet Code
1. What is OBDII code P0159 for a Chevrolet?
This code indicates a slow response from the HO2S22 sensor, which is the oxygen sensor located in the bank 2 sensor 2 position.
2. What are the common symptoms of a P0159 code in a Chevrolet?
Common symptoms include poor fuel economy, rough idling, hesitation or jerking during acceleration, and an illuminated check engine light.
3. What are the possible causes of a P0159 code in a Chevrolet?
Possible causes include a faulty HO2S22 sensor, wiring issues in the sensor circuit, exhaust leaks near the sensor, or an engine running too rich or too lean.
4. How can I diagnose a P0159 code in my Chevrolet?
Diagnosis typically involves using a scan tool to read the code, inspecting the sensor and its wiring for damage, checking for exhaust leaks, and monitoring sensor data to assess its response time.
5. Can I drive my Chevrolet with a P0159 code?
While it may be possible to drive with a P0159 code, it is not recommended as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.
6. How can I repair a P0159 code in my Chevrolet?
Repair options may include replacing the HO2S22 sensor, repairing any damaged wiring in the sensor circuit, fixing any exhaust leaks, and addressing any issues causing the engine to run too rich or too lean.
7. Is it possible to reset a P0159 code in a Chevrolet without fixing the underlying issue?
While clearing the code may temporarily turn off the check engine light, it will not fix the underlying issue causing the code to appear. The code is likely to reappear until the problem is resolved.
8. How much does it typically cost to repair a P0159 code in a Chevrolet?
The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $300 for parts and labor.
9. How long does it take to repair a P0159 code in a Chevrolet?
The repair time can vary based on the exact cause of the code and the complexity of the repair needed, but it typically takes anywhere from 1 to 3 hours at a mechanic's shop.
10. Can a P0159 code in a Chevrolet lead to other issues if left unrepaired?
If left unrepaired, a P0159 code can potentially lead to reduced engine performance, increased emissions, and damage to the catalytic converter over time, resulting in more costly repairs.
Discuss the causes and fixes for P0159 Chevrolet OBDII Code
Code P0159 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.
