This code is a common one that we often see in BMW vehicles experiencing transmission problems. The P0740 diagnostic trouble code references a torque converter clutch circuit open condition. When a solenoid valve tries to operate and the TCM senses a voltage drop, this code is recorded.

What causes this problem?

This code can be caused by a number of things, including:

• Low transmission fluid level
• Dirty transmission fluid
• Faulty torque converter clutch solenoid valve
• Torque converter clutch solenoid valve harness is open or shorted
• Torque converter clutch solenoid valve circuit poor electrical connection

If you have this problem, you may experience problems such as your Check Engine light coming on, transmission shift shock, or the vehicle may not shift into the highest gear. So what does this mean for you and your vehicle? You need to have your transmission problem properly diagnosed by qualified transmission experts.

At Eagle Transmission Mansfield, we will take the time to get to the root of the problems your vehicle is experiencing. This initial comprehensive diagnosis is done free of charge. Towing is also free, with major repairs, if you are not comfortable driving your vehicle to us.

Remember, if you fear that you’re having transmission problems, driving your vehicle can not only cause even more damage, and potentially costing you more money, but it can be dangerous to you, your passengers, and other drivers around you. When it doubt, choose the safer option and let us arrange for your car to be towed to our shop.

Let our professionals take care of your car and get you back on the road. Call Eagle Transmission Mansfield today.