Decoding the P0700 Code in Your Subaru: Causes and Solutions
Subaru vehicles are known for their impressive performance, reliability, and durability. However, even the best cars can experience issues occasionally, and one of the most common problems that Subaru owners encounter is the P0700 code.
This code can be frustrating and confusing, especially if you're unsure what this code means or how to fix it. Fortunately, with some knowledge and some troubleshooting, you can decode the P0700 code in your Subaru and quickly get it back on the road.
In this article, we'll take a look at what the P0700 code means, its causes, and the solutions you can use to resolve it.
Fixing the P0700 Code with Goodhood
So you might have gone to your local store to buy some things and noticed this trouble code. Your schedule is tightly packed, and you don't have time to take your car to a repair shop.
Fear not, since mobile auto repair services like Goodhood allows you to get your car fixed without leaving the comfort of your own home! The certified mechanics will bring all the necessary tools and parts needed for the job.
Simply book an appointment online, and our technician will come to you. Our technicians have specialized experience with Subaru vehicles, so they can quickly diagnose your issue, find the root cause, and devise a solution.
What Causes the P0700 Code in Subarus?
Malfunctioning Shift Solenoid
The shift solenoid regulates the flow of transmission fluid, which controls the gear changes. If the solenoid is faulty, it can cause issues with shifting or even prevent the transmission from shifting at all. This can trigger the P0700 code to appear on your Subaru's onboard diagnostic system.
Faulty Transmission Range Sensor
The transmission range sensor is responsible for detecting the position of the gear shift lever and sending signals to the TCM or ECM. If the sensor is not functioning correctly, it can cause issues with shifting, including harsh shifting or failure to shift at all. This can also trigger the P0700 code to appear.
Low Transmission Fluid Levels or Poor-quality Fluid
Transmission fluid is essential for lubricating the transmission and preventing it from overheating. If the fluid levels are low or the quality is poor, it can cause issues with shifting or even damage the transmission. This can trigger the P0700 engine code to appear.
Malfunctioning TCM or ECM
The TCM stands for the transmission control module. It controls the transmission and works with the powertrain control module, while the ECM, i.e., the engine control module, controls its functions. If either of these modules is malfunctioning, it can cause issues with shifting and trigger the P0700 code.
Damaged Wiring or Connectors in the Transmission Control Circuit
The transmission control circuit includes various sensors and components that work together to regulate the transmission. If any of the wiring or connectors in this circuit are damaged, it can cause issues with shifting and trigger the P0700 code.
Mechanical Issues with the Transmission Control System Malfunction
In some cases, the P0700 code can be caused by mechanical issues with the transmission itself. These can include worn-out clutches, damaged gear sets, or other issues requiring mechanical transmission repairs.
How a Professional Mechanic Diagnoses the P0700 Code
Retrieve the Diagnostic Trouble Codes (DTCs)
The first step in diagnosing any vehicle issue is retrieving the DTCs using an OBD-II scanner. The P0700 code is a generic code indicating a problem with the transmission control system. A professional mechanic will use the scanner to retrieve other transmission codes to help narrow down the issue.
Check the Transmission Fluid
Low transmission fluid levels or poor-quality fluid can cause issues with shifting and trigger the P0700 code. The mechanic will check the fluid level and quality and replace it if necessary.
Inspect the Wiring and Connectors
The mechanic will inspect the wiring and connectors in the transmission control circuit for any signs of damage or corrosion. They may also use a multimeter to check for continuity and resistance.
Check the Shift Solenoid
The mechanic will check the resistance of the shift solenoid and test its function using a scan tool. If the solenoid is faulty, they will replace it.
Test the Transmission Range Sensor
The mechanic will test the transmission range sensor using a scan tool and a multimeter to check for proper voltage and signal output. If the sensor is faulty, they will replace it.
Inspect the TCM and ECM
The mechanic will inspect the TCM and ECM for any signs of damage or malfunction. They may also perform a software update or reflash if necessary.
Perform a Road Test
Once the mechanic has completed the above steps, they will perform a road test to ensure that the issue has been resolved. If the P0700 code still appears, they may need to perform further diagnosis or inspection.
Overall, diagnosing the P0700 code in a Subaru requires a combination of technical knowledge, diagnostic tools, and experience. A professional mechanic will use a systematic approach to identify the underlying issue and provide an effective solution.
Conclusion
For Subaru owners, the P0700 code can be a frustrating and confusing problem to deal with. However, with some knowledge and troubleshooting, you can decode this code and get your car back on the road in no time.
If you need help resolving this issue, consider booking an appointment with Goodhood for reliable mobile auto repair services and preventative maintenance. Our certified mechanics have specialized experience with Subaru vehicles and can quickly diagnose and fix the issue, allowing you to get back on the road sooner.
Frequently Asked Questions
How much does it cost to fix the P0700 code in my Subaru?
The cost of fixing the P0700 code will depend on the underlying issue and any necessary repairs. It's best to book an appointment with a professional mechanic so that they can inspect your vehicle and provide a more accurate estimate.
What could be causing the P0700 code in my Subaru?
Various issues, such as low transmission fluid levels, poor-quality fluid, malfunctioning shift solenoid, faulty transmission range sensor, worn-out clutch, or damaged gear set, can cause the P0700 code. It's best to book an appointment with a professional mechanic so that they can inspect your vehicle and provide an accurate diagnosis.
Does the check engine light come on when the P0700 code appears in a Subaru?
Yes, the check engine light will typically come on if the P0700 code is triggered. It's best to book an appointment with a professional mechanic so that they can inspect your vehicle and provide an appropriate solution.
How do I reset the P0700 code in my Subaru?
The P0700 code should not be reset until the underlying issue has been resolved, as this will only temporarily clear the code and will likely reappear if the issue is not addressed. It's best to book an appointment with a professional mechanic so that they can inspect your vehicle and provide an appropriate solution.