P2229moderate severityPowertrain
Barometric Pressure Sensor A Circuit Range/Performance
on 2009 Subaru Legacy 2.5L H4 · AWD
What this code means
The barometric pressure sensor is reading outside expected range for current conditions.
Symptoms
- Check engine light
- Poor fuel economy
- Power loss at altitude
Common causes
- Failed BARO sensor
- Sensor intake blocked
- ECM reference voltage issue
Diagnostic steps
- Compare BARO reading to known atmospheric pressure
- Check sensor connector
- Verify 5V reference
Repair notes
Replace barometric pressure sensor or repair wiring.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1