P0238moderate severityPowertrain
Turbocharger/Supercharger Boost Sensor A Circuit High
on 2021 Subaru Legacy 2.5L H4 · AWD
What this code means
High voltage from boost sensor A.
Symptoms
- Check Engine Light
- False high boost reading
Common causes
- Open circuit
- Short to power
- Faulty sensor
Diagnostic steps
- Test voltage
- Check for shorts to power
Repair notes
Repair or replace sensor.
Other Powertrain codes on this vehicle
P0001
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P0002
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P0003
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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