P0156
O2 Sensor Circuit Bank 2 Sensor 2
1999-2000 BMW 323i E46 2.5L I6 🇩🇪
Moderate SeverityPowertrain
Description
General malfunction in the downstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
- Failed emissions
Common Causes
- Faulty sensor
- Wiring issue
- Exhaust leak
Diagnostic Steps
- Test sensor voltage
- Inspect wiring
- Check for leaks
Repair Notes
Replace sensor.
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
P0156 on Other Vehicles
Common Questions
What does code P0156 mean on a 1999-2000 BMW 323i E46?
P0156 stands for "O2 Sensor Circuit Bank 2 Sensor 2". General malfunction in the downstream O2 sensor on Bank 2.
What are the symptoms of P0156 on a BMW 323i E46?
Common symptoms of P0156 include: Check Engine Light, Failed emissions.
What causes P0156 on a 1999-2000 BMW 323i E46?
Common causes of P0156 include: Faulty sensor, Wiring issue, Exhaust leak.