P0964 Fault Code

Pressure Control Solenoid B Control Circuit / Open

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

The P0964 fault code indicates a problem with the Pressure Control Solenoid B Control Circuit. This component is essential in managing the hydraulic pressure within the transmission, which is critical for smooth shifting and overall vehicle performance.

What are the symptoms of the P0964 code?

When a P0964 code is present, you may experience:

• Erratic shifting or failure to shift into certain gears.
• Unusual noises from the transmission due to pressure discrepancies.
• Warning lights on the dashboard, particularly the check engine light.
• Reduced fuel efficiency and performance issues.

What causes the P0964 code?

Several factors can trigger a P0964 code, including:

• Damaged wiring or connectors within the solenoid control circuit.
• A faulty Pressure Control Solenoid B.
• Issues with the transmission control module (TCM) that governs solenoid function.
• Low transmission fluid levels or contamination that affects solenoid operation.

How to fix P0964?

To resolve a P0964 code, consider the following steps:

• Inspect the wiring and connectors related to Pressure Control Solenoid B for any signs of damage or corrosion.
• Test the Pressure Control Solenoid B with a multimeter to determine its functionality; replace if faulty.
• Check the transmission fluid level and quality; replace or refill as necessary.
• If no physical issues are found, a software update or reprogramming of the TCM may be required.