Intake Air Quality Sensor Circuit (Bank 1)
What does P2220 mean?
The P2220 code means the vehicle's onboard diagnostic system has detected: Intake Air Quality Sensor Circuit (Bank 1). This is a low severity code.
Common Symptoms
- Check Engine Light on
- No noticeable drivability issues
- Possible slight idle variation
- Emissions test failure
- Air quality sensor warning
Probable Causes (Ranked by Likelihood)
- Failed intake air quality sensor Very High
- Damaged or corroded sensor wiring High
- Loose or disconnected sensor connector Moderate
- Contaminated sensor element from oil vapor Moderate
- ECM circuit fault for the air quality sensor input Low
Step-by-Step Diagnostic Procedure
-
Read the intake air quality sensor value with a scan tool
-
Inspect the sensor connector and wiring for damage or corrosion
-
Verify the sensor has proper voltage supply and ground
-
Clean or replace the sensor if contaminated
-
Check for related codes that may indicate a broader intake system issue
Frequently Asked Questions
What does the intake air quality sensor do?
The intake air quality sensor measures properties of the incoming air such as humidity or particulate content. It helps the ECM optimize combustion and emissions by adjusting for air quality variations.
Is P2220 common?
P2220 is relatively uncommon and is primarily found on European vehicles that use dedicated intake air quality monitoring as part of their emissions control strategy.
Can I drive with P2220?
Yes, this code typically does not affect drivability. The engine will use default air quality values, which is adequate for normal driving but may not pass emissions testing.