P0973 Code: Shift Solenoid “A” Control Circuit Low

Is your vehicle’s check engine light illuminated? This might mean there’s an issue looming inside your vehicle. Using a scan tool can help you identify your vehicle’s problem by checking for stored trouble codes. If you see the P0973 code has been registered, you can read this article to know about the code’s definition and common causes and symptoms.

What Does the P0973 Code Mean?

Diagnostic trouble code (DTC) P0973 stands for Shift Solenoid “A” Control Circuit. This code is triggered when the transmission control module (TCM) detects an issue with shift solenoid “A” or its circuit. This code corresponds to the shift solenoid in the “A” circuit.

Shift solenoids are important parts of an automatic transmission, as they’re responsible for directing hydraulic fluid in the appropriate channels within the transmission. Problems with the transmission’s shift solenoid can result in problems shifting gears because the transmission relies on hydraulic fluid movement to shift gears.

Note: The definition of the P0973 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0973 Code?

The issues that usually trigger the P0973 code the following:

• Low transmission fluid levels
• Failed transmission shift solenoid
• Faulty wiring
• Internal valve body or transmission failure
• Failed TCM or software in need of an update

What are the Common Symptoms of the P0973 Code?

The P0973 code can cause your vehicle to show the following symptoms:

• Illuminated check engine light
• Decreased fuel efficiency
• Transmission shifting problems

How to Diagnose the P0973 Code

While the P0973 code might have a list of common causes, you will still need to verify what specifically is wrong with your vehicle. This might require you to test your vehicle’s shift control solenoid and various other transmission components. Keep in mind that the steps for diagnosing this and other trouble codes may vary depending on your vehicle’s specifications.

Diagnosing DTCs requires a lot of technical knowledge and might need specialized tools. If you don’t think you’re up to the task, you shouldn’t hesitate to let a professional mechanic do the job for you. However, if you’re interested to learn about the diagnostic process, you can check out the video below:

How to Fix the P0973 Code

Attempting to fix the P0973 code can be difficult especially if you don’t have the right tools and knowledge. This code involves the shift control solenoids, which might require a voltmeter and other equipment for them to be tested. If you have any doubts, feel free to consult a trusted mechanic. If you think you have the automotive know-how to work on your vehicle, make sure to follow the proper steps because repair procedures can vary greatly between different makes and models.

It’s vital that you find reliable sources and how-to guides. You can try checking guides like those from Chilton or an ALLDATA single vehicle subscription. You can also consult your vehicle manual, as they might have important information that can help you.