P0032low severityPowertrain
HO2S Heater Control Circuit High Bank 1 Sensor 1
on 2013 Lincoln MKX 3.5L V6 · AWD
What this code means
The voltage in the Bank 1 Sensor 1 O2 heater circuit is higher than expected.
Symptoms
- Check Engine Light
- Possible heater staying on too long
Common causes
- Short to power in heater circuit
- Faulty O2 sensor
- Relay stuck closed
Diagnostic steps
- Test heater circuit voltage
- Check for shorts to power
- Test sensor heater resistance
Repair notes
Repair short to power or replace O2 sensor.
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