What Does the P0959 Code Mean?
The P0959 code is an OBD-II diagnostic trouble code that indicates an intermittent issue with the Auto Shift Manual Mode Circuit. This code is specific to vehicles equipped with automatic transmissions that allow drivers to manually select gears, known as Autostick Shifting.
What Causes the P0959 Code?
The P0959 code can be triggered by several factors, including:
- Failure of the Autostick shift switch
- Powertrain Control Module (PCM) failure
- Wiring issues related to the Autostick system
What Are the Symptoms of the P0959 Code?
Common symptoms associated with the P0959 code include:
- Disabled Autostick shifting functionality
- Potential loss of transmission control
- Illumination of the check engine light
How Serious Is the P0959 Code?
The P0959 code is considered urgent as it indicates significant malfunctions that could lead to severe damage to the vehicle or pose safety risks to the driver and passengers. Immediate attention is recommended to prevent potential transmission issues.
How to Diagnose the P0959 Code
Diagnosing the P0959 code involves a systematic approach:
- Use an OBD-II scanner to confirm the P0959 code and check for any additional codes.
- Inspect the Autostick shift switch and wiring for any visible damage or disconnections.
- Test the functionality of the shift switch to ensure it is operating correctly.
- Check the Powertrain Control Module (PCM) for faults or failures.
Common Repairs for the P0959 Code
Common repairs to address the P0959 code may include:
- Replacing a faulty Autostick shift switch
- Repairing or replacing damaged wiring
- Replacing or reprogramming the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P0959 Code?
The cost to repair the P0959 code can vary widely depending on the underlying cause. On average, repairs can range from $100 to $600, including parts and labor. Specific costs will depend on the vehicle make and model, as well as the complexity of the repair needed.
Can I Fix the P0959 Code Myself?
While some DIY mechanics may be able to address minor wiring issues or replace the shift switch, it is essential to have a solid understanding of automotive systems and diagnostics. If you are not experienced, it is advisable to consult a professional mechanic to avoid unnecessary repairs and ensure safety.
