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P0983 OBD2: Shift Solenoid "D" Control Circuit High

P0983 OBD2: Shift Solenoid “D” Control Circuit High

What Does the P0983 Code Mean?

OBD-II Code P0983 is defined as a Shift Solenoid “D” Control Circuit High. This code indicates that the Transmission Control Module (TCM) has detected an issue with the control circuit for the Shift Solenoid D, which is essential for regulating hydraulic pressure in the transmission.

What Causes the P0983 Code?

The P0983 code can be triggered by several factors, including:

  • Failure of the Transmission Control Module (TCM)
  • Low transmission fluid level
  • Faulty transmission shift solenoid
  • Wiring issues affecting the solenoid or TCM

What Are the Symptoms of the P0983 Code?

When the P0983 code is present, you may experience the following symptoms:

  • Increased fuel consumption
  • Transmission may not shift properly

How Serious Is the P0983 Code?

The P0983 code is considered urgent and indicates that immediate action is necessary. Ignoring this issue could lead to severe damage to the transmission or compromise the safety of the vehicle and its passengers.

How to Diagnose the P0983 Code

To diagnose the P0983 code, a mechanic will typically follow these steps:

  1. Use an OBD-II scanner to confirm the presence of the P0983 code.
  2. Inspect the transmission fluid level and condition.
  3. Check the wiring and connectors related to the Shift Solenoid D and TCM for damage or corrosion.
  4. Test the Transmission Control Module and the Shift Solenoid D for functionality.

Common Repairs for the P0983 Code

Depending on the diagnosis, common repairs may include:

  • Replacing the faulty Transmission Control Module (TCM)
  • Refilling or replacing the transmission fluid
  • Replacing the defective shift solenoid
  • Repairing or replacing damaged wiring or connectors

How Much Does It Cost to Fix the P0983 Code?

The cost to fix the P0983 code can vary widely based on the underlying cause. On average, repairs can range from $100 to $1,500. Simple fixes like fluid replacement may be less expensive, while replacing a TCM or shift solenoid could be more costly.

Can I Fix the P0983 Code Myself?

While some DIY enthusiasts may attempt to address the P0983 code, it is recommended to seek professional help for proper diagnosis and repair. Understanding the complexities of the transmission system and the potential risks associated with incorrect repairs is crucial.

About JC Landry

JC spent 15+ years as a certified Master Mechanic before trading the shop for the keyboard. He's worked across dealerships, owned and operated his own independent garage, and consulted on automotive trade school curricula, reviewing technical textbooks used in vocational programs. He now serves as Editor-in-Chief at eManualOnline.com, where he oversees the platform's technical content. He's one of the few voices in automotive publishing who has actually turned wrenches professionally on the vehicles he covers. He didn't learn automotive repair to write about it. He learned to write after spending over a decade doing it.

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