P0959 | P0959 Auto Shift Manual Mode Circuit Intermittent | code p0959 | p0959 obd2 | dtc p0959

Описание: P0959 | P0959 Auto Shift Manual Mode Circuit Intermittent | code p0959 | p0959 obd2 | dtc p0959

Hello friends welcome to the ig garage channel today I am telling you how to fix P0959 Auto Shift Manual Mode Circuit Intermittent so watch this video and learn how to fix it friends if you like this video then subscribe to the ig garage channel for more videos.

In this video, we explain OBD-II Trouble Code P0959, which stands for “Auto Shift Manual Mode Circuit Intermittent.”
This code appears when the Transmission Control Module (TCM) detects an irregular or unstable signal from the auto shift manual mode control circuit. Intermittent signals can confuse the transmission and cause unpredictable gear behavior.

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🔍 Common Symptoms of P0959:

Check Engine Light ON

Manual mode works sometimes, fails other times

Paddle shifters respond inconsistently

Random gear changes

Delayed or harsh shifting

Transmission may enter limp mode

⚙️ Possible Causes of P0959:

Intermittent wiring connection in manual mode circuit

Loose or corroded connectors

Faulty manual shift switch

Defective paddle shifter assembly

Damaged wiring harness due to vibration

Failing Transmission Control Module (TCM)

🧰 How to Fix P0959:

Scan and confirm the fault code

Inspect wiring for loose, broken, or rubbed wires

Check connectors for corrosion or poor contact

Test manual mode switch and paddle shifters

Repair or replace damaged wiring

Replace faulty switch or shifter assembly

Reprogram or replace TCM if needed

Clear the code and road test the vehicle

📍 Manual Mode Circuit Location:

The auto shift manual mode circuit is usually located:

Inside the gear shifter assembly

In steering wheel paddle shifters (if equipped)

Along the wiring path between shifter and TCM

Location may vary depending on vehicle make and model.

💰 Estimated Repair Cost:

Diagnostic Scan: $100 – $150

Wiring / Connector Repair: $100 – $350

Manual Mode Switch / Paddle Shifter: $200 – $500

TCM Replacement or Reprogramming: $300 – $900

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🚗 Summary:

DTC P0959 indicates an intermittent electrical problem in the auto shift manual mode circuit. Fixing loose connections or faulty switches will restore smooth and reliable manual shifting.

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