P0137moderate severityPowertrain
O2 Sensor Circuit Low Voltage Bank 1 Sensor 2
on 2015 Kia Forte 1.8L I4 · FWD
What this code means
The downstream O2 sensor on Bank 1 is reading low voltage consistently.
Symptoms
- Check Engine Light
- Failed emissions
Common causes
- Faulty sensor
- Exhaust leak after cat
- Wiring short to ground
Diagnostic steps
- Test sensor voltage
- Check for exhaust leaks
- Inspect wiring
Repair notes
Replace sensor or repair leak.
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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
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1