P0952 Fault Code

ASM Control Circuit Low

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

The P0952 code indicates that there is a low voltage condition in the Automatic Shift Module (ASM) control circuit. This fault occurs when the control module detects a voltage level that is below the expected range. This could suggest issues with the wiring, connectors, or the module itself.

• The ASM is responsible for controlling the automatic transmission's shifting process.
• A low voltage signal can lead to improper transmission behavior, affecting vehicle performance.

What are the symptoms of the P0952 code?

When the P0952 code is triggered, you may experience various symptoms such as:

• Erratic shifting or failure to shift into gear.
• Transmission slipping or delays in shifts.
• Warning lights on the dashboard indicating transmission issues.
• Poor acceleration or unusual behavior of the automatic transmission.

What causes the P0952 code?

There are several potential causes for the P0952 code. Common causes include:

• Damaged or frayed wiring in the ASM control circuit.
• Faulty connectors that may not be making proper contact.
• A malfunctioning Automatic Shift Module.
• Electrical issues such as a weak battery or poor ground connections leading to low voltage.

How to fix P0952?

To resolve the P0952 fault code, follow these steps:

• Inspect the wiring and connectors in the ASM control circuit for any signs of damage or corrosion. Repair or replace as necessary.
• Check the voltage supply to the ASM; ensure that it meets specifications.
• Test the Automatic Shift Module to see if it is functioning correctly; if malfunctioning, replacement may be needed.
• Clear the diagnostic trouble codes (DTC) and take the vehicle for a test drive to confirm that the issue is resolved.