P0118high severityPowertrain
ECT Sensor 1 Circuit High Input
on 2022 BMW i4 eDrive40 Single Motor RWD · RWD
What this code means
The ECT sensor voltage is higher than expected, indicating very low temperature or open circuit.
Symptoms
- Check Engine Light
- Rich running at operating temp
- Poor fuel economy
- Fans not coming on
Common causes
- Open circuit
- Disconnected sensor
- Faulty sensor
- Corroded connector
Diagnostic steps
- Test sensor resistance
- Check for open circuits
- Inspect connector
Repair notes
Repair open circuit or replace sensor. CAUTION: Engine may overheat if fans do not activate.
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29CC
Misfire Cylinder 1
29CD
Misfire Cylinder 2
29CE
Misfire Cylinder 3
29CF
Misfire Cylinder 4
29D0
Misfire Cylinder 5
29D1
Misfire Cylinder 6
29D2
Misfire Cylinder 7
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Lambda Additive/Idle Adaptation Limit, Bank 1
29E1
Lambda Additive/Idle Adaptation Limit, Bank 2
29E2
Lambda Multiplicative Part-Load Adaptation Limit, Bank 1