Front Heated O2 Sensor Bank 2 Fault
2007-2016 Volvo S80 3.2L I6
Description
The ECM detected a fault in the front (upstream) heated oxygen sensor on Bank 2. The sensor signal or heater circuit is not providing reliable data for fuel trim control.
Symptoms
- Check Engine Light
- Poor fuel economy
- Rough idle on Bank 2
- Failed emissions test
Common Causes
- Faulty O2 sensor Bank 2
- O2 sensor heater failure Bank 2
- Exhaust leak at Bank 2 manifold
- Wiring fault to sensor
- Sensor connector corrosion
Diagnostic Steps
- Test O2 sensor signal Bank 2
- Test heater circuit resistance
- Check for exhaust leaks at Bank 2
- Inspect wiring and connector
- Compare sensor data between banks
Repair Notes
Replace the front heated O2 sensor on Bank 2.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1647 on Other Vehicles
Common Questions
What does code P1647 mean on a 2007-2016 Volvo S80?
P1647 stands for "Front Heated O2 Sensor Bank 2 Fault". The ECM detected a fault in the front (upstream) heated oxygen sensor on Bank 2. The sensor signal or heater circuit is not providing reliable data for fuel trim control.
What are the symptoms of P1647 on a Volvo S80?
Common symptoms of P1647 include: Check Engine Light, Poor fuel economy, Rough idle on Bank 2, Failed emissions test.
What causes P1647 on a 2007-2016 Volvo S80?
Common causes of P1647 include: Faulty O2 sensor Bank 2, O2 sensor heater failure Bank 2, Exhaust leak at Bank 2 manifold, Wiring fault to sensor, Sensor connector corrosion.