P1145 Cadillac Code - HO2S Cross Counts Bank 1 Sensor 3
Quick Answer
The diagnostic trouble code P1145 for Cadillac vehicles refers to an issue with the HO2S (Heated Oxygen Sensor) Cross Counts for Bank 1 Sensor 3. Common causes include Faulty oxygen sensor, Damaged wiring or connectors leading to the oxygen sensor, Issues with the ECM or engine control module. 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 Cadillac indicates HO2S Cross Counts Bank 1 Sensor 3.
- Common causes
- Common causes include Faulty oxygen sensor, Damaged wiring or connectors leading to the oxygen sensor, Issues with the ECM or engine control module.
- 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 Cadillac Description
The diagnostic trouble code P1145 for Cadillac vehicles refers to an issue with the HO2S (Heated Oxygen Sensor) Cross Counts for Bank 1 Sensor 3. This code indicates that there is a problem with the oxygen sensor located in the exhaust system of the vehicle. The oxygen sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. Bank 1 Sensor 3 specifically refers to the third oxygen sensor on the first bank of cylinders in the engine.
Common Causes of P1145 Cadillac
- Faulty oxygen sensor
- Damaged wiring or connectors leading to the oxygen sensor
- Issues with the ECM or engine control module
- Exhaust system leaks or damage
- Contaminated fuel affecting sensor readings
Symptoms of P1145 Cadillac
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or lack of power during acceleration
- Increased emissions output
- Check Engine Light illuminated on the dashboard
How to Fix P1145 Cadillac
- Diagnose the root cause of the issue by performing a thorough inspection of the oxygen sensor, wiring, connectors, and ECM.
- Replace the faulty oxygen sensor if necessary, ensuring the new sensor meets OEM specifications.
- Repair or replace any damaged wiring or connectors leading to the oxygen sensor.
- Clear the diagnostic trouble codes and reset the ECM to see if the issue persists.
- Test drive the vehicle to ensure the problem has been resolved and that the oxygen sensor readings are within the expected range.
Cost to Fix P1145 Cadillac
The cost of repairing the HO2S Cross Counts Bank 1 Sensor 3 issue can vary depending on the specific cause of the problem and the cost of parts and labor in your area. In general, replacing an oxygen sensor can range from $100 to $300, while addressing wiring or ECM issues may increase the cost. Labor costs can also impact the overall repair bill, with rates typically ranging from $80 to $150 per hour at most auto repair shops. It is advisable to obtain quotes from multiple shops to compare prices and ensure you are getting a fair deal.
Need more information about the P1145 Cadillac code?
Need more information on how to fix the P1145 Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1145 Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1145 Cadillac Code
No Frequently Asked Questions about P1145 Cadillac Code found.
Discuss the causes and fixes for P1145 Cadillac OBDII Code
Code P1145 Cadillac 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.