P0050
HO2S Heater Control Circuit Bank 2 Sensor 1
1997-2000 BMW 528i E39 2.8L I6 🇬🇧
Low SeverityPowertrain
Description
The PCM detected a malfunction in the heater circuit of the upstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
- Poor fuel economy
- Longer warmup emissions
Common Causes
- Faulty O2 sensor heater
- Blown fuse
- Wiring damage
Diagnostic Steps
- Check fuse
- Test heater resistance
- Inspect wiring
- Test PCM output
Repair Notes
Replace O2 sensor or repair wiring.
Related Codes
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- 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
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- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0050 on Other Vehicles
Common Questions
What does code P0050 mean on a 1997-2000 BMW 528i E39?
P0050 stands for "HO2S Heater Control Circuit Bank 2 Sensor 1". The PCM detected a malfunction in the heater circuit of the upstream O2 sensor on Bank 2.
What are the symptoms of P0050 on a BMW 528i E39?
Common symptoms of P0050 include: Check Engine Light, Poor fuel economy, Longer warmup emissions.
What causes P0050 on a 1997-2000 BMW 528i E39?
Common causes of P0050 include: Faulty O2 sensor heater, Blown fuse, Wiring damage.