P0118
ECT Sensor 1 Circuit High Input
1997-2000 BMW 528i E39 2.8L I6 🇦🇺
High SeverityPowertrain
Description
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.
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
P0118 on Other Vehicles
Common Questions
What does code P0118 mean on a 1997-2000 BMW 528i E39?
P0118 stands for "ECT Sensor 1 Circuit High Input". The ECT sensor voltage is higher than expected, indicating very low temperature or open circuit.
What are the symptoms of P0118 on a BMW 528i E39?
Common symptoms of P0118 include: Check Engine Light, Rich running at operating temp, Poor fuel economy, Fans not coming on.
What causes P0118 on a 1997-2000 BMW 528i E39?
Common causes of P0118 include: Open circuit, Disconnected sensor, Faulty sensor, Corroded connector.