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P0117 Volkswagen Code - Engine Coolant Temperature Circuit Low Input

Quick Answer

The P0117 code for Volkswagen vehicles indicates that there is a low input signal coming from the engine coolant temperature sensor circuit. Common causes include Faulty engine coolant temperature sensor, Corroded or damaged wiring in the coolant temperature sensor circuit, Issues with the ECM or PCM. 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
P0117 Volkswagen indicates Engine Coolant Temperature Circuit Low Input.
Common causes
Common causes include Faulty engine coolant temperature sensor, Corroded or damaged wiring in the coolant temperature sensor circuit, Issues with the ECM or PCM.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0117 Volkswagen Description

The P0117 code for Volkswagen vehicles indicates that there is a low input signal coming from the engine coolant temperature sensor circuit. This sensor is responsible for measuring the temperature of the engine coolant and sending this information to the engine control module (ECM) to adjust fuel delivery and ignition timing. When the ECM receives a low input signal, it may not be able to accurately control these functions, leading to potential performance issues and decreased fuel efficiency. This can also trigger the vehicle's check engine light to illuminate.

OBDII Code P0117 Volkswagen - Engine Coolant Temperature Circuit Low Input
P0117 Volkswagen Code - Engine Coolant Temperature Circuit Low Input

Common Causes of P0117 Volkswagen

  1. Faulty engine coolant temperature sensor
  2. Corroded or damaged wiring in the coolant temperature sensor circuit
  3. Issues with the ECM or PCM
  4. Low coolant levels
  5. Thermostat malfunction

Symptoms of P0117 Volkswagen

  1. Check engine light is illuminated
  2. Engine running hotter or colder than normal
  3. Poor fuel economy
  4. Engine misfires or rough idling
  5. Coolant temperature gauge not functioning correctly

How to Fix P0117 Volkswagen

  1. Begin by diagnosing the issue with a scan tool to confirm the P0117 code.
  2. Inspect the engine coolant temperature sensor and its wiring for any signs of damage or corrosion.
  3. Test the sensor's resistance to ensure it is functioning correctly.
  4. Replace the engine coolant temperature sensor if it is faulty.
  5. Clear the trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0117 Volkswagen

The cost of repairing the P0117 code on a Volkswagen can vary depending on the specific model and year of the vehicle. On average, the parts for this repair, including a new engine coolant temperature sensor, can range from $50 to $100. The labor cost for this repair can range from $100 to $200, assuming a shop rate of $80 to $150 per hour. It's important to note that additional diagnostic time may be required to pinpoint the exact cause of the issue, so the final cost may vary. It is recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's specific needs.

When is the Code Detected?

An excessively low 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 P0117 Volkswagen Code

1. What are the common symptoms of OBDII code P0117 in a Volkswagen?

The common symptoms of OBDII code P0117 in a Volkswagen include issues with the engine's cooling system, such as overheating, poor fuel efficiency, and potential stalling.

2. What are some possible causes of the Engine Coolant Temperature Circuit Low Input code in a Volkswagen?

Possible causes of the P0117 code in a Volkswagen include a faulty engine coolant temperature sensor, damaged wiring or connectors related to the sensor, low coolant levels, or a malfunctioning thermostat.

3. How can I diagnose the cause of OBDII code P0117 in my Volkswagen?

To diagnose the cause of the P0117 code in your Volkswagen, you can use an OBDII scanner to read the code and check the engine coolant temperature sensor's resistance with a multimeter. Inspect the wiring and connectors for any visible damage or corrosion as well.

4. Is it safe to drive my Volkswagen with the P0117 code present?

It is not recommended to drive your Volkswagen with the P0117 code present, as it can lead to potential engine damage due to incorrect engine temperature readings. It's best to address the issue promptly to prevent further issues.

5. Can I reset the OBDII code P0117 in my Volkswagen to see if it reoccurs?

While you can reset the P0117 code using an OBDII scanner, it is important to diagnose and repair the underlying issue causing the code before resetting it. If the problem persists, the code will likely reappear after driving.

6. How can I repair the Engine Coolant Temperature Circuit Low Input code in my Volkswagen?

Repairing the P0117 code in your Volkswagen may involve replacing the engine coolant temperature sensor, repairing damaged wiring or connectors, topping up coolant levels, or replacing a faulty thermostat if necessary.

7. Will the P0117 code cause my Volkswagen's check engine light to illuminate?

Yes, the P0117 code will trigger the check engine light to illuminate on your Volkswagen's dashboard. It is important not to ignore the warning light and address the underlying issue causing the code.

8. Can a DIY enthusiast fix the P0117 code in a Volkswagen, or should it be done by a professional mechanic?

Depending on your level of automotive knowledge and experience, a DIY enthusiast may be able to diagnose and repair the P0117 code in a Volkswagen. However, if you are unsure or uncomfortable tackling the repair yourself, it is advisable to seek assistance from a professional mechanic.

9. Are there any preventive maintenance tips to avoid encountering the P0117 code in my Volkswagen?

To prevent the P0117 code from appearing in your Volkswagen, it is recommended to perform regular coolant system checks, replace the engine coolant temperature sensor at recommended intervals, and address any cooling system issues promptly to maintain optimal engine performance.

10. How long does it typically take to repair the P0117 code in a Volkswagen?

The time it takes to repair the P0117 code in a Volkswagen can vary depending on the underlying cause of the issue. Simple fixes like replacing a sensor or repairing wiring may take an hour or two, while more complex repairs could require several hours or a day at the mechanic.

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