P2231moderate severityPowertrain
Barometric Pressure Sensor A Circuit High
on 2009 Subaru Legacy 2.5L H4 · AWD
What this code means
Barometric pressure sensor signal exceeds expected maximum.
Symptoms
- Check engine light
- Lean condition
- Hesitation
Common causes
- Open circuit
- Short to voltage
- Sensor failure
Diagnostic steps
- Measure sensor signal
- Check for opens or shorts to power
Repair notes
Replace sensor or repair circuit.
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P0002
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P0010
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P0014
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P0015
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