P0038low severityPowertrain
HO2S Heater Control Circuit High Bank 1 Sensor 2
on 2008 Toyota Highlander 3.5L V6 · AWD
What this code means
The voltage in the Bank 1 Sensor 2 O2 heater circuit is higher than expected.
Symptoms
- Check Engine Light
- Possible overheating
Common causes
- Short to power
- Faulty sensor
- Relay issue
Diagnostic steps
- Test heater voltage
- Check for shorts to power
- Test resistance
Repair notes
Repair short or replace 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