The P222B: Barometric Pressure Sensor ‘B’ Circuit Range/Performance code indicates that there is a range or performance issue with the barometric pressure sensor ‘B’ circuit. This can be caused by calibration problems, wiring issues, or connector faults, leading to incorrect pressure readings that affect engine performance.
P222B – Quick Overview
Code | Information |
---|---|
Meaning | P222B: Barometric Pressure Sensor ‘B’ Circuit Range/Performance |
Is it serious? | Yes, a range or performance issue can cause improper air-fuel mixture adjustments, leading to poor engine performance and drivability issues. |
Possible causes | – Range or performance issues with the barometric pressure sensor ‘B’ circuit – Calibration problems – Wiring or connector issues |
How to diagnose? | – Test the range and performance of the barometric pressure sensor ‘B’ circuit – Check for calibration problems – Inspect wiring and connectors for faults |
P222B Meaning
The P222B: Barometric Pressure Sensor ‘B’ Circuit Range/Performance code indicates that the engine control module (ECM) has detected a range or performance problem in the barometric pressure sensor ‘B’ circuit. The barometric pressure sensor helps the ECM adjust the air-fuel mixture by measuring atmospheric pressure. A performance issue in this circuit can lead to inaccurate readings, resulting in poor engine performance and fuel efficiency.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for additional related codes that may provide more insight into the barometric pressure sensor issue. | OBD-II Scanner |
Test Barometric Pressure Sensor ‘B’ Range/Performance | Use a multimeter or diagnostic tool to test the range and performance of the barometric pressure sensor ‘B’. Compare the readings to manufacturer specifications. | Multimeter, Diagnostic Tool |
Check for Calibration Problems | Verify that the barometric pressure sensor ‘B’ is calibrated correctly. Improper calibration can lead to inaccurate or inconsistent readings. | Diagnostic Tool |
Inspect Wiring and Connectors | Visually inspect the wiring and connectors associated with the barometric pressure sensor ‘B’. Look for damaged wires, corrosion, or loose connections that could cause performance issues. | Flashlight, Safety Gloves |
Test Circuit Continuity | Use a multimeter to check for continuity in the barometric pressure sensor ‘B’ circuit. Poor continuity may cause performance issues. | Multimeter, Wiring Diagram |
Repair or Replace Faulty Components | If any faulty wiring, connectors, or the barometric pressure sensor ‘B’ is found, repair or replace them as necessary to restore proper function. | Replacement Parts, Tools |
Clear the Code and Test Drive | After repairs, clear the P222B code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue is resolved. | OBD-II Scanner |
Recheck for Codes | After the test drive, re-scan the vehicle to confirm that the P222B code does not return. | OBD-II Scanner |

OBD-II scanner Buyer’s Guide
- Scanner features explained
- Different types of scanners
- Scanners for coding/odometer/ECU/checks
- Best picks + discount codes

Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)