P0976 Code: Shift Solenoid “B” Control Circuit Low

Is your vehicle showing symptoms of a bad transmission? You should check if your vehicle’s powertrain control module (PCM) has stored any trouble codes by connecting a scan tool. If the P0976 code has been triggered, you can read this article to know the code’s definition and common causes and symptoms.

What Does the P0976 Code Mean?

Diagnostic trouble code (DTC) P0976 is defined as Shift Solenoid “B” Control Circuit Low. This code is triggered when the transmission control module (TCM) detects a shift solenoid isn’t performing properly. This code is meant to signify that the problem corresponds to the shift solenoid in the “B” circuit.

Shift solenoids are critical components of an automatic transmission because they direct hydraulic fluid through the transmission’s channels. Since the transmission relies on hydraulic fluid movement to shift gears, problems with the transmission’s shift solenoid can cause problems when it comes to shifting gears.

Note: The definition of the P0976 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 P0976 Code?

The problems that trigger the P0976 code are the following:

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

What are the Common Symptoms of the P0976 Code?

Your vehicle might exhibit the following symptoms when the P0976 code is triggered:

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

How to Diagnose the P0976 Code

Identifying the main cause of the P0976 code can be difficult because there are several components that you need to check. You might need special knowledge or tools to access and test parts like the shift solenoid and TCM. If you want to properly diagnose the P0976 code in your vehicle, it’s best to consult a professional.

If you’re interested in learning more about this issue and its diagnostic process, then you should check out this video:

How to Fix the P0976 Code

Want to fix the problems causing the P0976 code to trigger? You should try to find the culprit first. Otherwise, you might end up misdiagnosing the issue and not fixing the root cause. After finding the cause, you can look at reputable internet repair resources and how-to guides to learn how to fix it. You should rely on repair guides that correspond to your specific vehicle make and model since repair procedures for DTCs can vary greatly.

If you don’t have much experience diagnosing DTCs, you should consult a professional mechanic.