P0118 Honda Code - Engine Coolant Temperature Sensor 1 Circuit High Voltage
Quick Answer
The Engine Coolant Temperature (ECT) Sensor 1 is used for air/fuel ratio feedback control, ignition timing control, idle speed control, and other functions. Common causes include Faulty Engine Coolant Temperature (ECT) Sensor 1, Engine Coolant Temperature Sensor 1 harness is open or shorted, Engine Coolant Temperature Sensor 1 circuit poor electrical connection. 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 Honda indicates Engine Coolant Temperature Sensor 1 Circuit High Voltage.
- Common causes
- Common causes include Faulty Engine Coolant Temperature (ECT) Sensor 1, Engine Coolant Temperature Sensor 1 harness is open or shorted, Engine Coolant Temperature Sensor 1 circuit poor electrical connection.
- 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 Honda Description
What are the Possible Causes of the DTC P0118 Honda?
- Faulty Engine Coolant Temperature (ECT) Sensor 1
- Engine Coolant Temperature Sensor 1 harness is open or shorted
- Engine Coolant Temperature Sensor 1 circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P0118 Honda?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0118 Honda 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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Information for Specific Honda Models
- P0118 2008 Honda Accord — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2009 Honda Accord — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2010 Honda Accord — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 1996 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 1997 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 1998 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 1999 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2000 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2016 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2017 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2018 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2019 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2020 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit High Voltage
- P0118 2021 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit High Voltage
Frequently Asked Questions about P0118 Honda Code
1. What are the common symptoms of OBDII code P0118 in a Honda?
- Common symptoms include the engine running hot or cold, poor fuel economy, rough idling, and a malfunctioning temperature gauge.
2. What can cause the P0118 code to trigger in a Honda?
- The most common causes of this code are a faulty engine coolant temperature sensor, a wiring issue in the coolant temperature sensor circuit, or a malfunctioning engine control module (ECM).
3. How can I diagnose the P0118 code in my Honda?
- You can diagnose the code by checking the coolant level, inspecting the wiring and connectors of the temperature sensor, testing the sensor's resistance, and scanning the ECM for additional fault codes.
4. Can I drive my Honda with the P0118 code present?
- It is not recommended to drive your Honda with the P0118 code present, as it can lead to engine overheating and potential damage.
5. How do I repair the P0118 code in my Honda?
- To repair the P0118 code, you may need to replace the engine coolant temperature sensor, repair any damaged wiring or connectors, or reprogram the ECM if necessary.
6. Will resetting the check engine light make the P0118 code disappear?
- Resetting the check engine light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return.
7. Can a dirty coolant system cause the P0118 code in my Honda?
- Yes, a dirty coolant system or low coolant levels can affect the accuracy of the engine coolant temperature sensor and trigger the P0118 code.
8. How much does it cost to fix the P0118 code in a Honda?
- The cost to fix the P0118 code in a Honda can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor.
9. Is the P0118 code specific to Hondas only?
- No, the P0118 code indicating Engine Coolant Temperature Sensor 1 Circuit High Voltage can be found in vehicles from various manufacturers, not just Honda.
10. Can a DIY enthusiast fix the P0118 code in a Honda?
- Depending on your level of automotive knowledge and experience, a DIY enthusiast may be able to diagnose and repair the P0118 code in a Honda by following proper diagnostic procedures and using the right tools.
Discuss the causes and fixes for P0118 Honda OBDII Code
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My mechanic husband says because that code came up we need. an "Engine control ignition relay feedback circuit" (He gets angry when bring it up. I gotta get my smog! He gave it a tune-up. But engine lite stays on...And he dr
ives like a bat out a hell! HELP! Advice anyone?
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