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P0117 Dodge Code - Engine Coolant Temperature Sensor Circuit Low

Quick Answer

The P0117 code for Dodge vehicles indicates a problem with the engine coolant temperature sensor circuit being lower than the expected voltage range. Common causes include Faulty engine coolant temperature sensor, Wiring issues or shorts in the sensor circuit, Corrosion or poor connections in the 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
P0117 Dodge indicates Engine Coolant Temperature Sensor Circuit Low.
Common causes
Common causes include Faulty engine coolant temperature sensor, Wiring issues or shorts in the sensor circuit, Corrosion or poor connections in the 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0117 Dodge Description

The P0117 code for Dodge vehicles indicates a problem with the engine coolant temperature sensor circuit being lower than the expected voltage range. This sensor is crucial for monitoring the temperature of the engine coolant and ensuring that the engine operates within optimal temperature ranges. When the sensor detects a low voltage signal, it can lead to incorrect temperature readings, affecting the vehicle's performance and fuel efficiency. If left unresolved, it can potentially cause engine overheating, reduced fuel economy, and increased emissions.

OBDII Code P0117 Dodge - Engine Coolant Temperature Sensor Circuit Low
P0117 Dodge Code - Engine Coolant Temperature Sensor Circuit Low

Common Causes of P0117 Dodge

  1. Faulty engine coolant temperature sensor
  2. Wiring issues or shorts in the sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. Coolant leaks affecting sensor readings
  5. Issues with the engine control module (ECM)

Symptoms of P0117 Dodge

  1. Check engine light illuminated on the dashboard
  2. Inaccurate temperature gauge readings
  3. Engine running too cold or too hot
  4. Poor fuel economy
  5. Rough idling or stalling

How to Fix P0117 Dodge

  1. Begin by diagnosing the root cause of the issue using a scan tool to read the code and checking the sensor's voltage levels.
  2. Inspect the wiring and connections related to the engine coolant temperature sensor for any damage, corrosion, or loose connections.
  3. Test the sensor itself for proper functionality and replace it if necessary.
  4. Clear the diagnostic trouble codes and reset the engine control module to see if the issue persists.
  5. Conduct a test drive to ensure that the engine coolant temperature readings are accurate and the symptoms have been resolved.

Cost to Fix P0117 Dodge

The cost of repairing the P0117 code for a Dodge vehicle can vary depending on the specific model, location, and labor rates. Generally, replacing the engine coolant temperature sensor and addressing any wiring issues can cost between $100 to $300. Additional costs may apply if other components need replacement or if the diagnosis process takes longer. It's recommended to consult with a reputable auto repair shop for an accurate estimate tailored to your vehicle's needs.

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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 Dodge Code

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

- Common symptoms include engine overheating, rough idling, poor fuel economy, and a possible decrease in engine performance.

2. What causes the OBDII code P0117 in a Dodge vehicle?

- The most common cause is a malfunctioning engine coolant temperature (ECT) sensor, which may be faulty, damaged, or disconnected.

3. How can I diagnose the OBDII code P0117 in my Dodge?

- You can use a scan tool to check the code, inspect the ECT sensor and its wiring for any damage, and perform tests to determine if the sensor is functioning properly.

4. Can a faulty thermostat cause the OBDII code P0117 in a Dodge?

- Yes, a malfunctioning thermostat can cause inaccurate temperature readings and trigger the P0117 code. It is recommended to check the thermostat as part of the diagnosis.

5. What are some repair tips for fixing the OBDII code P0117 in a Dodge?

- Start by checking the ECT sensor and its wiring for any issues. If the sensor is faulty, replacing it with a new one should resolve the problem. Ensure proper installation and connection.

6. Does the OBDII code P0117 in a Dodge affect the vehicle's emissions?

- Yes, a malfunctioning ECT sensor can impact the engine's fuel mixture and emissions control system, potentially leading to increased emissions and failing an emissions test.

7. Can driving with the OBDII code P0117 in a Dodge cause further damage to the vehicle?

- Continued driving with a faulty ECT sensor can potentially lead to engine overheating, which may cause damage to engine components over time. It is recommended to address the issue promptly.

8. Is it safe to continue driving my Dodge with the OBDII code P0117 present?

- It is not recommended to drive the vehicle with the P0117 code active, as it can lead to engine performance issues and potential overheating problems. It is best to address the issue before driving.

9. How long does it typically take to repair the OBDII code P0117 in a Dodge?

- The repair time can vary depending on the exact cause of the issue. Replacing a faulty ECT sensor is a relatively quick repair that can usually be completed within an hour or so.

10. Can I reset the OBDII code P0117 in my Dodge without fixing the underlying issue?

- While you can clear the code with a scan tool, it is not recommended to do so without addressing the root cause. The code is likely to reappear if the underlying problem is not fixed.

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