P0118
P0118 means "Engine Coolant Temperature (ECT) Sensor High Input". Severity: 🟡 Moderate. You can often drive short distances, but address it promptly to avoid further damage.
What the P0118 code means
| Code | P0118 |
| Definition | Engine Coolant Temperature (ECT) Sensor High Input |
| System | Powertrain (engine & transmission) |
| Type | Generic (SAE standard) |
| Subsystem | Fuel & Air Metering |
| Severity | 🟡 Moderate |
Common causes of P0118
- Failed coolant temp sensor
- Open circuit/wiring fault
- Connector corrosion
How to fix P0118
- Replace the ECT sensor
- Repair the wiring/connector
Always confirm the diagnosis with a scan tool and live data before replacing parts.
Is it safe to drive with P0118?
You can often drive short distances, but address it promptly to avoid further damage.
P0118, answered.
What does P0118 mean?
P0118 stands for "Engine Coolant Temperature (ECT) Sensor High Input". It is a generic (sae standard) OBD-II powertrain trouble code.
Is it safe to drive with a P0118 code?
You can often drive short distances, but address it promptly to avoid further damage.
What causes P0118?
Common causes include: Failed coolant temp sensor; Open circuit/wiring fault; Connector corrosion.
How do you fix P0118?
Typical fixes: Replace the ECT sensor; Repair the wiring/connector. Always confirm the diagnosis before replacing parts.