P1150 Toyota Code - Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 2 Sensor 1
Quick Answer
The Air-Fuel ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. Common causes include Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1, Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted, Air fuel Ratio (A/F) 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
- P1150 Toyota indicates Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1, Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted, Air fuel Ratio (A/F) 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 P1150 Toyota Description
What are the Possible Causes of the DTC P1150 Toyota?
- Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1
- Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted
- Air fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection
- Fuel pressure
- Fuel injector
- Intake air leaks
How to Fix the DTC P1150 Toyota?
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 P1150 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80β$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1150 Toyota code?
Need more information on how to fix the P1150 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1150 Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- P1150 2004 Toyota Prius β Coolant Path Clog of Coolant Heat Storage System
- P1150 2005 Toyota Prius β Coolant Path Clog of Coolant Heat Storage System
- P1150 2006 Toyota Prius β Coolant Path Clog of Coolant Heat Storage System
- P1150 2007 Toyota Prius β Coolant Path Clog of Coolant Heat Storage System
- P1150 2008 Toyota Prius β Coolant Path Clog of Coolant Heat Storage System
- P1150 2009 Toyota Prius β Coolant Path Clog of Coolant Heat Storage System
- P1150 Toyota RAV4 β Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 2 Sensor 1
Frequently Asked Questions about P1150 Toyota Code
1. What are the common symptoms of OBDII code P1150 in a Toyota?
Common symptoms include poor fuel economy, rough idling, hesitation during acceleration, and the illumination of the check engine light.
2. What does the OBDII code P1150 for a Toyota mean?
The P1150 code indicates a malfunction in the air/fuel ratio sensor circuit for Bank 2 Sensor 1.
3. What are the possible causes of the P1150 code in a Toyota?
Possible causes include a faulty air/fuel ratio sensor, wiring issues in the sensor circuit, a vacuum leak, or a problem with the engine's air intake system.
4. How can I diagnose the P1150 OBDII code in my Toyota?
Diagnosis typically involves checking the air/fuel ratio sensor for proper operation, inspecting the wiring for damage or loose connections, and ensuring there are no vacuum leaks in the system.
5. Can I drive my Toyota with the P1150 code present?
It is generally not recommended to drive with the P1150 code active, as it can lead to reduced fuel efficiency and potential engine performance issues.
6. How can I repair the P1150 code in my Toyota?
Repairing the P1150 code may involve replacing the air/fuel ratio sensor, repairing any damaged wiring, fixing vacuum leaks, or addressing any issues with the air intake system.
7. Is it safe to clear the P1150 code in my Toyota using an OBDII scanner?
Clearing the code with an OBDII scanner may temporarily turn off the check engine light, but it is important to address the underlying issue causing the code to prevent further problems.
8. How much does it cost to fix the P1150 code in a Toyota?
The cost of fixing the P1150 code can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars for parts and labor.
9. Can a DIY enthusiast repair the P1150 code in a Toyota?
Some aspects of diagnosing and repairing the P1150 code may be possible for a skilled DIY enthusiast, but complex issues or sensor replacement may require professional expertise.
10. How often does the P1150 code occur in Toyota vehicles?
The P1150 code is not extremely common in Toyota vehicles, but it can occur due to sensor or circuit malfunctions over time. Regular maintenance and inspections can help prevent this code from appearing.
Discuss the causes and fixes for P1150 Toyota OBDII Code
-
Should be the same. What engine size is your Toyota Solara? 2.2 (4 Cyl.) or 3.0 (6 Cyl.) ?
-
P1150 for the 2000 sienna says it is bank 1 sensor 2 in my smartphone code book. Which is correct; this blog or the code book?
-
According to the Factory Service Manual the P1150 code is Bank 2 Sensor 1.
Here is an image from the manual.

Click here to enlarge image
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.