P0965: Pressure Control Solenoid Control Circuit Range/Performance
The P0965 code indicates that the Powertrain Control Module (PCM) has detected a range or performance problem in the control circuit of the Pressure Control Solenoid (PCS) 'C'. This solenoid regulates hydraulic pressure to the transmission clutches and bands for smooth shifting. The code sets when the PCM sees an unexpected voltage or resistance in the solenoid circuit, often due to electrical faults, solenoid failure, or transmission fluid issues.
01. Most Common Causes
- Faulty pressure control solenoid 'C'
- Wiring or connector issues in the solenoid circuit
- Low or contaminated transmission fluid
- Internal transmission mechanical problems
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: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Visually check wiring and connectors for damage, corrosion, or loose connections.
Step 4: Test solenoid resistance and power/ground circuits with a multimeter; compare to specs.
Step 5: If electrical tests pass, suspect internal transmission issues; consult a professional.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with P0965 can cause erratic shifting, transmission damage, or complete failure. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs range from $200 to $600, depending on the cause. Solenoid replacement is typically $200-$400, while wiring repairs or transmission work can be higher.