P1264 OBD Code Definition:
P1264 Cylinder #4 High To Low Side Short
P1264 OBD Code Description:

Possible Symptoms

• Drivability Issues
• Reduced Power
• Rough Engine Running
• Increased Emission Values

Possible Causes

• Regulation times exceeded
• Contact resistance

Possible Solutions

• Check Injectors and Injector Wiring
  • See Meas. Value Block 018
  • Check Resistance of Injectors/Wiring