Check the speedometer connection. The car is starting because the clutch interlock safety switch is stuck in the "Start" position. Look under the dash at the top of the clutch pedal. You will see a plunger switch. It should move freely. If you do not see this switch, it is a pressure switch within the hydraulic system. Look for a sensor with lectrical leads on or near the master cylinder. This probablay why you are throwing a trouble code.