Barometric Pressure Sensor Circuit High
What does P2226 mean?
The P2226 code means the vehicle's onboard diagnostic system has detected: Barometric Pressure Sensor Circuit High. This is a low severity code.
Common Symptoms
- Check Engine Light on
- Engine may run rich
- Decreased fuel economy
- Black smoke from exhaust under load
- Sluggish throttle response
Probable Causes (Ranked by Likelihood)
- Short to voltage in the barometric pressure sensor wiring Very High
- Failed barometric pressure sensor reading high High
- Water intrusion in the sensor connector Moderate
- Damaged wiring shorted to another circuit Moderate
- ECM internal circuit fault Low
Step-by-Step Diagnostic Procedure
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Read the barometric pressure sensor value and compare to actual atmospheric pressure
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Inspect wiring for shorts to voltage or other circuits
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Check the connector for water intrusion or damaged pins
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Disconnect the sensor and verify the signal drops
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Replace the barometric sensor if wiring is intact
Frequently Asked Questions
What happens when barometric pressure reads high?
The ECM interprets a high reading as low altitude and increases fuel delivery, which can cause the engine to run rich with poor fuel economy and black exhaust smoke.
Can weather changes trigger P2226?
A properly functioning sensor should handle weather-related pressure changes without triggering codes. If weather changes cause P2226, the sensor or its circuit is marginal and needs attention.
Is the barometric sensor the same as the BARO sensor?
Yes, BARO is the abbreviation commonly used in diagnostic literature for the barometric pressure sensor.