P0118 1998 Honda Civic Code - Engine Coolant Temperature Sensor 1 Circuit High Voltage
Quick Answer
The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low Engine Coolant Level, Faulty Engine Coolant Temperature (ECT) sensor, Faulty Engine Coolant Thermostat. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0118 1998 Honda Civic indicates Engine Coolant Temperature Sensor 1 Circuit High Voltage.
- Common causes
- Common causes include Low Engine Coolant Level, Faulty Engine Coolant Temperature (ECT) sensor, Faulty Engine Coolant Thermostat.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0118 1998 Honda Civic Description
What are the Possible Causes of the DTC P0118 1998 Honda Civic?
- Low Engine Coolant Level
- Faulty Engine Coolant Temperature (ECT) sensor
- Faulty Engine Coolant Thermostat
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
How to Fix the DTC P0118 1998 Honda Civic?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0118 1998 Honda Civic code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0118 1998 Honda Civic Code
1. What are the common symptoms of OBDII code P0118 (Engine Coolant Temperature Sensor 1 Circuit High Voltage) in a 1998 Honda Civic?
The common symptoms include engine overheating, rough idling, poor fuel economy, and the Check Engine light illuminating on the dashboard.
2. What are the possible causes of OBDII code P0118 in a 1998 Honda Civic?
The code P0118 in a 1998 Honda Civic is commonly triggered by a faulty engine coolant temperature sensor, a wiring issue in the coolant temperature sensor circuit, or a problem with the engine control module (ECM).
3. How can I diagnose the cause of OBDII code P0118 in my 1998 Honda Civic?
To diagnose the cause of code P0118, you can start by checking the engine coolant level, inspecting the coolant temperature sensor and its wiring for damage, and using a multimeter to test the sensor's resistance and voltage.
4. Can a faulty engine coolant temperature sensor cause other issues in a 1998 Honda Civic besides triggering OBDII code P0118?
Yes, a faulty engine coolant temperature sensor can cause issues like inaccurate temperature readings on the dashboard, incorrect fuel mixture, and potential engine overheating, leading to poor performance and reduced fuel efficiency.
5. How can I repair OBDII code P0118 in my 1998 Honda Civic?
Repairing OBDII code P0118 typically involves replacing the faulty engine coolant temperature sensor, repairing any damaged wiring in the sensor circuit, and clearing the trouble code with an OBDII scanner.
6. Is it safe to continue driving my 1998 Honda Civic with OBDII code P0118 (Engine Coolant Temperature Sensor 1 Circuit High Voltage)?
It is not recommended to continue driving with code P0118 as it can lead to engine overheating, potential damage to engine components, and reduced overall performance and fuel efficiency.
7. Can a DIY enthusiast replace the engine coolant temperature sensor in a 1998 Honda Civic to fix code P0118?
Yes, replacing the engine coolant temperature sensor in a 1998 Honda Civic is a relatively straightforward task that can be done by a DIY enthusiast with basic automotive repair skills and tools.
8. How much does it typically cost to repair OBDII code P0118 in a 1998 Honda Civic at a professional mechanic's shop?
The cost of repairing OBDII code P0118 in a 1998 Honda Civic at a professional mechanic's shop can vary depending on the labor rates and parts costs, but it is generally a moderate-cost repair.
9. Are there any preventive maintenance tips to avoid OBDII code P0118 in a 1998 Honda Civic?
To prevent OBDII code P0118, it is recommended to have regular coolant system inspections, maintain proper coolant levels, and address any cooling system issues promptly to ensure the proper function of the engine coolant temperature sensor.
10. Can a disconnected engine coolant temperature sensor cause OBDII code P0118 in a 1998 Honda Civic?
Yes, a disconnected or improperly connected engine coolant temperature sensor can trigger OBDII code P0118 in a 1998 Honda Civic as the ECM may interpret the lack of signal as a high voltage condition, leading to the trouble code.
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