The P0958 code is an OBD-II trouble code indicating a problem with the Auto Shift Manual Mode Circuit. This code typically arises in vehicles equipped with automatic transmissions that allow drivers to select gears manually, often referred to as Autostick or similar systems.
What Does the P0958 Code Mean?
The P0958 code signifies that the Powertrain Control Module (PCM) has detected a high voltage issue in the Auto Shift Manual Mode circuit. This can disable the Autostick shifting feature, impacting the vehicle’s drivability and performance.
What Causes the P0958 Code?
Several factors can trigger the P0958 code, including:
- Autostick shift switch failure
- Powertrain Control Module (PCM) failure
- Wiring issues in the manual mode circuit
What Are the Symptoms of the P0958 Code?
The most common symptom associated with the P0958 code is the disabling of the Autostick shifting feature. This can make it difficult for drivers to manually control gear selection when desired.
How Serious Is the P0958 Code?
The P0958 code is considered urgent. It indicates a significant malfunction that can lead to severe damage to the vehicle’s transmission system or compromise the safety of the driver and passengers if not addressed promptly.
How to Diagnose the P0958 Code
To diagnose the P0958 code, a mechanic will typically follow these steps:
- Use an OBD-II scanner to confirm the presence of the P0958 code.
- Inspect the Autostick shift switch and related wiring for any visible damage or wear.
- Check the Powertrain Control Module (PCM) for faults or failures.
- Perform continuity tests on the wiring to ensure proper electrical flow.
Common Repairs for the P0958 Code
Common repairs for the P0958 code may include:
- Replacing a faulty Autostick shift switch
- Repairing or replacing damaged wiring in the manual mode circuit
- Replacing or reprogramming the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P0958 Code?
The cost to fix the P0958 code can vary widely based on the underlying cause of the issue. On average, repairs may range from $100 to $800, depending on whether it requires a simple switch replacement or a more complex PCM repair.
Can I Fix the P0958 Code Myself?
If you have experience with automotive repairs and diagnostics, you may be able to address some of the common causes of the P0958 code yourself, such as inspecting wiring or replacing the shift switch. However, due to the complexity and potential risks involved, it is advisable to consult a professional mechanic for a thorough diagnosis and repair.
