Have you ever been driving your Chrysler and suddenly noticed a “check engine” light illuminating on your dashboard? This can be a frustrating experience, especially if you don’t know what the problem is. One common code that you might encounter is P0720, which indicates a problem with your transmission output speed sensor. In this article, we’ll explore what this code means, the potential causes, and how to fix it.
Understanding P0720 Code: What It Really Means
The P0720 code is a diagnostic trouble code (DTC) related to your vehicle’s transmission output speed sensor. This sensor is responsible for monitoring the speed at which your transmission is rotating. When the Electronic Control Unit (ECU) detects an issue with the output speed sensor, it triggers the check engine light and stores the P0720 code.
From an Automotive Repair Specialist’s Perspective:
The P0720 code is a sign that your transmission isn’t communicating properly with the ECU, preventing the ECU from accurately controlling shift points and other transmission functions.
From a Technical Perspective: The output speed sensor uses magnetic induction to measure the speed of the transmission’s output shaft. This information is then sent to the ECU, which uses it to control shifting, throttle response, and other important transmission functions.
From an Economic Perspective: Ignoring this code could lead to more serious transmission problems in the future, resulting in costly repairs.
What Causes Chrysler P0720 Code?
There are several reasons why your Chrysler might be throwing a P0720 code:
1. Faulty Output Speed Sensor
The most common cause of the P0720 code is a faulty output speed sensor. This sensor can become damaged or worn over time, leading to inaccurate speed readings and triggering the code.
Example: Imagine the output speed sensor as a speedometer in your car. If the speedometer isn’t working correctly, you can’t accurately gauge your speed. Similarly, a faulty output speed sensor prevents your ECU from accurately monitoring the transmission’s speed.
2. Wiring Problems
Another potential cause is wiring issues between the output speed sensor and the ECU. A broken wire, loose connection, or short circuit can disrupt the signal flow, causing the code to appear.
Example: Think of the wiring as the communication line between the output speed sensor and the ECU. If there’s a break in the line, the message won’t reach its destination, leading to a communication error.
3. Transmission Problems
In some cases, the P0720 code might indicate a deeper problem with your transmission itself, such as a faulty transmission control module (TCM) or mechanical issues within the transmission.
Example: Imagine the transmission as a complex machine with many parts working together. If one of these parts fails, it can affect the overall functioning of the transmission, including the output speed sensor.
Troubleshooting Chrysler P0720 Code
Here are some steps you can take to troubleshoot the P0720 code:
- Inspect the Output Speed Sensor: Start by visually inspecting the output speed sensor for any signs of damage or wear. If you find any issues, you’ll need to replace the sensor.
- Check the Wiring: Carefully inspect the wiring between the output speed sensor and the ECU for any signs of damage, loose connections, or short circuits. Repair or replace any damaged wiring.
- Use a Diagnostic Scanner: A diagnostic scanner, such as a Dealer Scanner, can help you pinpoint the exact cause of the P0720 code. This tool can provide more detailed information about the problem and help you determine whether the issue lies with the sensor, wiring, or the transmission itself.
Example: Imagine a diagnostic scanner as a doctor who can diagnose the exact cause of a medical problem. Similarly, a diagnostic scanner can provide valuable insights into the underlying cause of the P0720 code.
- Consider Transmission Fluid Level and Condition: Check the transmission fluid level and condition. Low fluid levels or dirty fluid can affect transmission operation and contribute to the P0720 code.
Example: Imagine transmission fluid as the lifeblood of your transmission. If the fluid is low or dirty, it can prevent the transmission from operating smoothly, leading to issues with the output speed sensor.
Common Questions About Chrysler P0720 Code
Q1: Can I drive my car with the P0720 code?
A: It is generally recommended to avoid driving your car with the P0720 code, as it could potentially cause further damage to your transmission. The code indicates a problem with the transmission’s speed sensor, which could lead to erratic shifting, reduced performance, and even transmission failure.
Q2: How much does it cost to fix the P0720 code?
A: The cost of fixing the P0720 code can vary depending on the underlying cause and the repair shop you choose. Replacing the output speed sensor can typically range from $100 to $300, while more extensive repairs, such as a transmission rebuild, could cost thousands of dollars.
Q3: What should I do if I can’t fix the P0720 code myself?
A: If you are not comfortable diagnosing and repairing the P0720 code yourself, it’s best to take your car to a qualified automotive repair shop. They have the tools, expertise, and experience to identify and fix the problem efficiently.
Where to Get Help:
We strongly encourage you to contact a qualified mechanic or a dealership service center if you are facing issues with the P0720 code. We also offer expert support in diagnosing and repairing automotive electrical systems. If you need help installing or using diagnostics tools, we have 24/7 support available on Whatsapp: +84767531508.
Conclusion
The P0720 code can be a frustrating problem, but with the right knowledge and troubleshooting steps, you can identify the root cause and get your Chrysler back on the road. Remember to check the output speed sensor, wiring, and consider the possibility of transmission problems. If you’re unsure about the repair process, don’t hesitate to contact a professional for assistance. Stay safe and drive confidently!