What is CID 1078 & How to Solve It?

What is CID 1078:

CID 1078 indicates a fault with the transmission fluid pressure sensor circuit. Inaccurate pressure readings can lead to poor shifting, overheating, or transmission failure.

‍

Why This Happens:

• Faulty transmission fluid pressure sensor.
  
• Shorted or damaged wiring in the sensor circuit.
  
• Low transmission fluid.
  
• Malfunctioning solenoids.
  
• ECM failure to process sensor data correctly.
  
  

How to Fix It:

1. Inspect the transmission fluid pressure sensor and wiring.
   
2. Test the sensor’s voltage and output under varying loads.
   
3. Check transmission fluid levels and add if needed.
   
4. Replace the faulty sensor if necessary.
   
5. Verify proper fluid pressure readings after repairs.
   
   

How to Avoid It Before It Happens:

• Regularly inspect transmission fluid levels and condition.
  
• Replace filters and fluids on time.
  
• Monitor pressure readings during diagnostics.
  
• Clue’s fleet management software tracks transmission health to ensure optimal performance.