P0960: Pressure Control Solenoid A Control Circuit/Open
The P0960 code indicates an open or malfunction in the control circuit of the pressure control solenoid A. This solenoid regulates hydraulic pressure within the automatic transmission to control shift timing and firmness. An open circuit means there is a break in the electrical path, preventing the solenoid from receiving proper voltage or ground. This can cause erratic shifting, harsh engagement, or transmission slippage.
01. Most Common Causes
- Open or shorted wiring in the solenoid control circuit
- Faulty pressure control solenoid A
- Damaged transmission control module (TCM)
- Corroded or loose electrical connectors
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifting
- Transmission slipping or stuck in gear
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test solenoid resistance with a multimeter (typically 4-6 ohms).
Step 4: Check for voltage and ground at the solenoid connector with the ignition on.
Step 5: If wiring and solenoid are okay, test TCM output signals.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a faulty pressure control solenoid can cause transmission damage, erratic shifting, or complete failure, leading to unsafe driving conditions.
How much does it cost to fix?▼
Repair costs vary from $200 to $600, depending on the cause. Replacing the solenoid may cost $150-$400 for parts and labor, while TCM replacement can exceed $800.