Engine-CodesScion – P0118 2007 Scion xB

P0118 2007 Scion xB Code - Engine Coolant Temperature Circuit High Input

Quick Answer

The P0118 code on a 2007 Scion xB indicates that there is a problem with the Engine Coolant Temperature (ECT) sensor circuit. Common causes include Faulty ECT sensor, Damaged ECT sensor wiring harness, Corrosion or poor connection in the ECT sensor circuit. 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 2007 Scion xB indicates Engine Coolant Temperature Circuit High Input.
Common causes
Common causes include Faulty ECT sensor, Damaged ECT sensor wiring harness, Corrosion or poor connection in the ECT sensor circuit.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0118 2007 Scion xB Description

The P0118 code on a 2007 Scion xB indicates that there is a problem with the Engine Coolant Temperature (ECT) sensor circuit. This code is triggered when the Engine Control Module (ECM) detects a high voltage input from the ECT sensor, which measures the temperature of the engine coolant. The ECT sensor is crucial for providing the ECM with accurate data about the engine temperature, allowing it to adjust fuel delivery and ignition timing for optimal performance and efficiency.

OBDII Code P0118 2007 Scion xB - Engine Coolant Temperature Circuit High Input
P0118 2007 Scion xB Code - Engine Coolant Temperature Circuit High Input

Common Causes of P0118 2007 Scion xB

  1. Faulty ECT sensor
  2. Damaged ECT sensor wiring harness
  3. Corrosion or poor connection in the ECT sensor circuit
  4. Faulty ECM
  5. Coolant system leaks or low coolant levels

Symptoms of P0118 2007 Scion xB

  1. Check Engine Light illuminated on the dashboard
  2. Engine running hotter or colder than usual
  3. Decreased fuel efficiency
  4. Rough idling
  5. Hesitation during acceleration

How to Fix P0118 2007 Scion xB

  1. Begin by diagnosing the issue using a scan tool to read the fault codes and determine the specific cause of the high input in the ECT sensor circuit.
  2. Inspect the ECT sensor and its wiring harness for any signs of damage, corrosion, or poor connections. Replace the sensor or repair the wiring if necessary.
  3. Check the coolant level and inspect for any leaks in the cooling system. Address any issues found and refill the coolant as needed.
  4. Clear the fault codes from the ECM memory and test drive the vehicle to ensure that the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause, such as testing the ECM for faults or performing a more in-depth inspection of the wiring harness.

Cost to Fix P0118 2007 Scion xB

The typical repair costs for addressing a P0118 code on a 2007 Scion xB can range from $100 to $300, including parts and labor. Keep in mind that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to inquire about local rates to get a more accurate estimate for this repair.

Tech Notes for P0118 2007 Scion xB

Replacing the Coolant Temperature (ECT) sensor usually fixes the problem.

When is the Code Detected?

An excessively high voltage from the sensor is sent to ECM.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0118 2007 Scion xB Code

1. What does OBDII code P0118 mean for a 2007 Scion xB?

The code P0118 on a 2007 Scion xB indicates a high input in the engine coolant temperature circuit.

2. What are the common symptoms of OBDII code P0118 in a 2007 Scion xB?

Common symptoms of code P0118 in a 2007 Scion xB include the engine running hotter than normal, a temperature gauge reading high, and potential issues with the vehicle's fuel efficiency.

3. What are the possible causes of OBDII code P0118 in a 2007 Scion xB?

Potential causes of code P0118 in a 2007 Scion xB include a faulty engine coolant temperature sensor, a wiring issue in the coolant temperature circuit, or a problem with the vehicle's engine control module (ECM).

4. How can I diagnose OBDII code P0118 in my 2007 Scion xB?

Diagnosing code P0118 in a 2007 Scion xB involves checking the engine coolant temperature sensor for proper operation, inspecting the wiring for any damage or corrosion, and using a diagnostic scanner to read the ECM data.

5. How can I repair OBDII code P0118 in a 2007 Scion xB?

To repair code P0118 in a 2007 Scion xB, you may need to replace the engine coolant temperature sensor, repair any damaged wiring in the circuit, or reprogram the ECM if necessary.

6. Can I drive my 2007 Scion xB with OBDII code P0118?

It is not recommended to drive your 2007 Scion xB with code P0118, as it can lead to potential overheating issues and damage to the engine. It is best to address the problem promptly.

7. How much does it cost to fix OBDII code P0118 in a 2007 Scion xB?

The cost to fix code P0118 in a 2007 Scion xB can vary depending on the root cause of the issue. It may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast fix OBDII code P0118 in a 2007 Scion xB?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix code P0118 in a 2007 Scion xB by replacing the engine coolant temperature sensor or checking the wiring for any issues.

9. Will resetting the check engine light resolve OBDII code P0118 in a 2007 Scion xB?

Simply resetting the check engine light will not resolve code P0118 in a 2007 Scion xB. The underlying issue causing the high input in the engine coolant temperature circuit needs to be diagnosed and repaired.

10. How often does OBDII code P0118 occur in a 2007 Scion xB?

Code P0118 in a 2007 Scion xB can occur due to various factors, such as sensor malfunction, wiring problems, or ECM issues. It is not a common code but can happen sporadically.

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