P1145 Chevrolet Code - HO2S Cross Counts Bank 1 Sensor 3
Quick Answer
The P1145 code in a Chevrolet vehicle indicates an issue with the HO2S (Heated Oxygen Sensor) cross counts on Bank 1 Sensor 3. Common causes include Faulty oxygen sensor, Wiring issues, Vacuum leak. 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
- P1145 Chevrolet indicates HO2S Cross Counts Bank 1 Sensor 3.
- Common causes
- Common causes include Faulty oxygen sensor, Wiring issues, Vacuum leak.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1145 Chevrolet Description
The P1145 code in a Chevrolet vehicle indicates an issue with the HO2S (Heated Oxygen Sensor) cross counts on Bank 1 Sensor 3. This sensor is responsible for measuring the oxygen content in the exhaust gases, which helps the engine control module (ECM) adjust the air-fuel mixture for optimal combustion. When the cross counts are outside the specified range, it means that the sensor is not providing accurate readings, which can lead to a variety of performance issues.
Common Causes of P1145 Chevrolet
- Faulty oxygen sensor
- Wiring issues
- Vacuum leak
- Fuel system problem
- Exhaust leak
Symptoms of P1145 Chevrolet
- Decreased fuel efficiency
- Rough idling
- Engine hesitation or stalling
- Check Engine Light illuminated
- Increased emissions
How to Fix P1145 Chevrolet
- Perform a diagnostic scan to confirm the P1145 code and identify the exact cause of the issue.
- Inspect the wiring and connections of the oxygen sensor for any damage or corrosion. Repair or replace as needed.
- Check for vacuum leaks and repair any leaks found.
- Test the fuel system for proper operation, including fuel pressure and injector performance. Address any issues discovered.
- If necessary, replace the oxygen sensor to ensure accurate readings and optimal engine performance.
Cost to Fix P1145 Chevrolet
The cost of repairing a P1145 code in a Chevrolet vehicle can vary depending on the specific cause of the issue. In general, replacing an oxygen sensor can cost between $100 and $300, including parts and labor. However, additional repairs, such as fixing wiring issues or addressing a vacuum leak, can increase the total cost. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and required repairs. Keep in mind that labor rates can vary, so it's advisable to check local rates for a more precise estimate.
Need more information about the P1145 Chevrolet code?
Need more information on how to fix the P1145 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1145 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1145 Chevrolet Code
No Frequently Asked Questions about P1145 Chevrolet Code found.
Discuss the causes and fixes for P1145 Chevrolet OBDII Code
Code P1145 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.