Barometric Pressure Sensor Circuit Intermittent
The P2227 code means the vehicle's onboard diagnostic system has detected: Barometric Pressure Sensor Circuit Intermittent. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $30 - $250 (parts and labor)
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Common Symptoms
- Intermittent Check Engine Light
- Occasional hesitation
- Sporadic fuel economy changes
- Intermittent rough running
- Random performance fluctuations
Probable Causes (Ranked by Likelihood)
- Loose barometric pressure sensor connector Very High
- Partially broken wire in the sensor circuit High
- Corroded connector pins Moderate
- Sensor beginning to fail intermittently Moderate
- Vibration-induced connection issues Low
Step-by-Step Diagnostic Procedure
-
Wiggle test the barometric pressure sensor connector while watching live data
-
Inspect the wiring harness for chafing or partial breaks
-
Clean connector pins and apply dielectric grease
-
Monitor sensor readings during a road test for erratic behavior
-
Replace the sensor if wiring is confirmed good
Frequently Asked Questions
Why does P2227 come and go?
Intermittent codes typically indicate a connection problem -- a loose connector, corroded pin, or damaged wire that only fails under certain conditions like vibration or temperature changes.
Can vibration cause intermittent barometric sensor codes?
Yes, engine vibration or road vibration can cause a loose connector to intermittently lose contact, resulting in sporadic sensor reading dropouts.
Should I replace the sensor for an intermittent code?
Check the wiring and connections first. Many intermittent codes are resolved by cleaning connectors and repairing wiring, which is much cheaper than replacing the sensor.
Sources
This page is built from documented references. Verify against your own service info before repair work.
P2227 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
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