P0961 Fault Code

Pressure Control Solenoid A Control Circuit Range/Performance

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

The P0961 fault code indicates a problem with the Pressure Control Solenoid A control circuit. This solenoid is responsible for regulating the hydraulic pressure within the transmission system, directly affecting shifting performance and overall operation of the vehicle. When the control circuit's performance falls outside the expected range, it may lead to erratic shifting or transmission slipping.

What are the symptoms of the P0961 code?

Drivers may experience various symptoms when the P0961 code is present, such as:

• Harsh or delayed shifting.
• Slipping transmission or inability to shift at all.
• Unusual noises from the transmission when attempting to shift.
• Warning lights on the dashboard, particularly the check engine light.

What causes the P0961 code?

Several factors can contribute to triggering the P0961 code, including:

• Faulty Pressure Control Solenoid A.
• Damaged or corroded wiring or connectors leading to the solenoid.
• Low transmission fluid levels or dirty transmission fluid.
• A malfunctioning engine control module (ECM) or transmission control module (TCM).
• Internal transmission issues such as worn clutches or bands.

How to fix P0961?

To resolve the P0961 fault code, it is important to follow a systematic diagnosis:

• Start by checking the transmission fluid level and condition; top up or replace as necessary.
• Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
• Test the Pressure Control Solenoid A for proper operation and replace if faulty.
• If all else seems in order, examine the ECM/TCM for proper function and potential software updates or replacements.