P0960
UniversalPressure Control Solenoid 'A' Control Circuit / Open
High SeverityThis code indicates an electrical problem with the Pressure Control Solenoid A, specifically an open circuit, which means there is no electrical connection. An open circuit in this solenoid can lead to erratic or harsh shifting, reduced fuel economy, and the transmission potentially entering 'limp mode' to prevent damage.
⚠️ Before You Begin (Safety First)
Always practice safety when working on vehicles. Ensure the vehicle is on a level surface, securely supported by jack stands, and the engine is cool before attempting any work. Disconnect the battery before performing any electrical checks or component replacement to prevent accidental shorts or injury.
Common Symptoms
- Check Engine Light illuminated
- Harsh or erratic transmission shifts
- Delayed engagement of gears
- Transmission slipping
- Vehicle entering 'limp home' mode (reduced power/limited gears)
- Poor fuel economy
Common Causes
- Faulty or failed Pressure Control Solenoid 'A'
- Open circuit in the wiring harness to the solenoid
- Corroded or damaged electrical connectors
- Failure in the Transmission Control Module (TCM) or Powertrain Control Module (PCM)
- Insufficient transmission fluid level or contaminated fluid (less common for open circuit)
Frequently reported on: 2005 Ford F-150, 2007 Chevrolet Silverado 1500, 2003 Honda Accord, 2010 Chrysler Town & Country
Diagnostic Steps
- Check transmission fluid level and condition; ensure it is at the correct level and not burnt or dark.
- Inspect the wiring harness and connectors leading to the transmission for any visible signs of damage, corrosion, or looseness.
- Locate the Pressure Control Solenoid 'A' (refer to vehicle-specific repair manual) and test its resistance with a multimeter. An open circuit typically indicates infinite resistance.
- If the solenoid is accessible externally, consider replacing it. If internal, further diagnosis may require dropping the transmission pan.
- After any repairs, clear the P0960 code using an OBD-II scanner and test drive the vehicle to confirm the repair.
👨🔧 When to Call a Professional
While basic diagnosis can be performed at home, if you identify that the Pressure Control Solenoid A is internal to the transmission and requires opening the transmission case or removing the valve body, it is highly recommended to consult a professional transmission specialist. Internal transmission work can be complex and requires specialized tools and knowledge.
Commonly Asked Questions
Can I drive my car with a P0960 code?
It is not recommended to drive your car with a P0960 code for an extended period. The transmission may experience harsh shifting or operate in limp mode, which can lead to further damage to the transmission.
What does 'open circuit' mean in the context of this code?
An 'open circuit' means there is a break in the electrical path, preventing current from flowing to the Pressure Control Solenoid A. This could be due to a broken wire, a faulty connection, or an internal failure within the solenoid itself.
Is the solenoid always the problem when P0960 appears?
While a faulty solenoid is a common cause, it's not always the sole culprit. The wiring harness, connectors, or even the Transmission Control Module (TCM) could also be responsible for an open circuit.
How can I test the Pressure Control Solenoid A?
You can test the solenoid using a multimeter by checking its resistance across its terminals. Refer to your vehicle's service manual for the correct resistance specifications. An 'open' circuit will typically show an infinite resistance reading.
What if the Pressure Control Solenoid A is located inside the transmission?
If the solenoid is internal, accessing it usually requires dropping the transmission pan and potentially removing the valve body. This is a more involved repair that may require specialized tools and expertise.