P0949 Fault Code

ASM Adaptive Learning Not Done

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0949 fault code indicates that the Adaptive Learning process for the ASM (Adaptive Shift Management) system has not been performed. This system is responsible for optimizing transmission shifts based on driving conditions and the driver's style. If adaptive learning is not completed, the transmission may not perform as intended, leading to issues with shifting and overall drivability.

What are the symptoms of the P0949 code?

When the P0949 code is present, you may experience:

• Erratic or harsh shifting patterns
• Slipping or delayed transmission engagement
• Poor acceleration response
• Check Engine Light illuminated
• Decreased fuel efficiency due to improper shifting.

What causes the P0949 code?

There can be several reasons for the P0949 code. Some common causes include:

• Transmission control module (TCM) errors
• Faulty sensors or wiring
• A malfunction in the adaptive learning mechanism
• Recent transmission repairs or replacements that haven't been calibrated properly
• Software issues that prevent the completion of the adaptive learning process.

How to fix P0949?

To resolve the P0949 code, follow these steps:

1. Run a diagnostic scan to confirm the P0949 code and check for additional related codes.
2. Inspect all sensors, wiring, and connectors associated with the transmission for signs of damage.
3. Clear the fault codes and perform a transmission fluid change if necessary.
4. Reprogram or calibrate the TCM to initiate the adaptive learning process correctly.
5. If the problem persists, consider consulting a professional technician for a thorough examination of the transmission system.