P0032low severityPowertrain
HO2S Heater Control Circuit High Bank 1 Sensor 1
on 2004 Subaru Legacy 3.0L H6 · AWD
What this code means
The voltage in the Bank 1 Sensor 1 O2 heater circuit is higher than expected.
Symptoms
- Check Engine Light
- Possible heater staying on too long
Common causes
- Short to power in heater circuit
- Faulty O2 sensor
- Relay stuck closed
Diagnostic steps
- Test heater circuit voltage
- Check for shorts to power
- Test sensor heater resistance
Repair notes
Repair short to power or replace O2 sensor.
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