P0118 Infiniti Code - Engine Coolant Temperature Sensor Circuit High
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 Infiniti indicates Engine Coolant Temperature Sensor Circuit High.
- 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 Infiniti Description
Sensor Example:
What are the Possible Causes of the DTC P0118 Infiniti?
- 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 Infiniti?
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 Infiniti 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 Infiniti Models
- P0118 2003 Infiniti G35 — Engine Coolant Temperature Circuit High Input
- P0118 2004 Infiniti G35 — Engine Coolant Temperature Circuit High Input
- P0118 2005 Infiniti G35 — Engine Coolant Temperature Circuit High Input
- P0118 2006 Infiniti G35 — Engine Coolant Temperature Circuit High Input
Frequently Asked Questions about P0118 Infiniti Code
1. What does the OBDII code P0118 mean for my Infiniti?
P0118 indicates a problem with the Engine Coolant Temperature (ECT) sensor circuit, specifically that the voltage signal is higher than expected.
2. What are common symptoms of code P0118 in an Infiniti?
Symptoms may include poor fuel economy, rough idle, engine overheating, difficulty starting, and the Check Engine Light being illuminated.
3. What causes the P0118 code to trigger in an Infiniti?
Common causes include a faulty ECT sensor, damaged wiring or connectors, a short circuit, or issues with the engine control module (ECM).
4. Can I drive my Infiniti with a P0118 code?
Driving with a P0118 code is not recommended, as it may lead to poor engine performance, overheating, and potential engine damage.
5. How do I diagnose the P0118 code on my Infiniti?
Diagnosis involves checking the ECT sensor, inspecting the wiring and connectors for damage, and using a multimeter to measure resistance and voltage in the circuit.
6. How do I fix the P0118 code on my Infiniti?
Repairs may include replacing the ECT sensor, repairing or replacing damaged wiring, cleaning corroded connections, or addressing issues with the ECM.
7. Where is the engine coolant temperature sensor located on my Infiniti?
The ECT sensor is typically located near the thermostat housing on the engine block or cylinder head.
8. How much does it cost to fix a P0118 code on an Infiniti?
Repair costs can range from $50 to $300, depending on whether the issue is a simple sensor replacement or more extensive electrical repairs.
9. Can a bad thermostat cause a P0118 code on an Infiniti?
While uncommon, a stuck thermostat causing extreme temperature fluctuations could potentially contribute to this code.
10. Will clearing the code fix the P0118 issue on my Infiniti?
Clearing the code without addressing the underlying problem will not fix it. The code will likely return until the issue is resolved.
Discuss the causes and fixes for P0118 Infiniti OBDII Code
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