P0057low severityPowertrain
HO2S Heater Control Circuit Low Bank 2 Sensor 2
on 1997 BMW 318ti E36 1.9L I4 M44 · RWD
What this code means
Low voltage in the Bank 2 Sensor 2 O2 heater circuit.
Symptoms
- Check Engine Light
Common causes
- Short to ground
- Faulty sensor
Diagnostic steps
- Test voltage
- Check for shorts
Repair notes
Repair or replace.
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