P2770 OBD Error Code: Problem & Solutions

<<See All OBD Codes

If you feel a sudden drop in the engine performance and continuous stalling and hard idles along with flashing of check engine lights on the dashboard, this may be an indication of OBD Code P2770 being stored in the PCM/ECM.

OBD code P2770 means Torque Converter Clutch Circuit High Issue.

In an automatic engine, a torque converter is a part that takes the place of a manual clutch, allowing the engine to move somewhat independently of the transmission. This is what allows the engine to idle instead of cut off when your wheels and transmission stop, such as when you’re at a traffic light. If the voltage in the torque converter clutch is found to be high, OBD code P2770 gets stored in the system.

What causes this problem with the Torque Converter Clutch Circuit High?

• Pressure control solenoid failure
• Pressure control solenoid wiring and harness damaged or broken
• Loose connections to the solenoid circuit
• Low transmission fluid levels
• Transmission fluid pump leakage
• Torque converter clutch failure
• Transmission torque converter problematic
• TCM error

1. Engine Control Module - Want to know the most common reason behind the failure in the engine control module? Corrosion or damage because of moisture can cause ECM failure. Corrosion might enter the ECM through the wiring harness and moisture can enter by a failure in the seals in the ECM itself.
2. Engine Wiring Harness - Your car ECM would not operate properly if there are some cracks or break in the engine wiring harness. Corrosion as well as physical damage are the most common reasons why you should replace an engine wiring harness. Purchase high grade engine wiring harness online from Parts Avatar Canada.
3. Automatic Transmission Module - Faulty transmission control module can cause problematic down shifts and upshifts, leading to stalling while accelerating or slowing down. This can also hamper many transmission system parts. Thus, replace it now!
4. Powertrain Control Module - The PCM makes the engine and transmission work in tandem. Any issue with the powertrain control module will cause major problems with the efficient running of the vehicle.
5. Electronic Control Unit - If your vehicle fails to start for no apparent reason, this is also a good indicator that there can be some issues with the ECU. If you check the car battery, starter and other common electrical components, and the vehicle still does not start, a quirky electronic control unit should be the next logical thing to consider.
6. Diagnostic Tool - In order to fix these errors, you need a few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come in handy to do so and resolve all your vehicle problems. Visit today!
7. Automatic Transmission Solenoid - If you are experiencing roughness during shifting of gears, it is most likely because of too much fluid pressure in the hydraulics or because of a malfunctioning transmission solenoid.
8. Automatic Transmission Sensor - If the signals are lost from the transmission speed sensors, the PCM will set a DTC and illuminate the Check Engine Light on the vehicle dashboard. It also can indicate that there is an increase in tailpipe emissions is occurring that surpasses acceptable limits for environmental contaminants from motor vehicles. Thus, replace it immediately.
9. Auto Transmission Torque Converter - A bad torque converter will take the transmission longer to engage the engine, resulting in higher than normal stall speeds. Thus, replace the faulty component now!
10. Transmission Fluid - Low transmission fluid symptoms also include the slipping of the engaged gear. It does not let the gear to stay in the mode you have selected. If the fluid level is right, the culprit must be the residue build up that impedes the fluid to flow freely.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P2770 here:

Common Symptoms

• Reduced fuel efficiency
• Affected engine performance and acceleration
• Rough starts and engine idle
• Transmission may overheat
• Malfunction Indicator Light (MIL) illumination

Here are some ways with the help of which you will be able to correct the OBD Code P2770.

• Pressure solenoid replacement
• Fluid pump replacement
• Fluid filter replacement
• Transmission speed sensor replacement
• Damaged, broken or faulty wiring and connector replacement

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best priced Torque Converter Clutch, TCM, Converter Clutch, Valve Body and a lot more to help you out in fixing your car.

Here are some steps which you should follow in order to diagnose this fault code P2770:

• Install a scan tool in vehicles OBD-II port to check if P2770 is present or not.
• Freeze frame data and test drive to check if the code reappears under same conditions.
• If the Check Engine Light returns upon test, then the code is confirmed.
• Search technical service bulletins (TSB) in your vehicle information source. If you find one that matches the symptoms and code/s presented by the vehicle in question, it will very likely aid you in your diagnosis. TSB listings are compiled from thousands of successful repairs.
• Check the transmission fluid for low levels and contamination and replace it immediately.
• Perform a visual inspection of wiring and connectors for any damage, breaks, or shorted wiring.
• If the wiring is okay, the solenoid itself will be tested to confirm operation. Perform a continuity test to check for and open or short in the solenoid circuit and wiring.
• Check for the voltage of torque converter clutch and make sure it is not excessively low. If low voltage is confirmed, transmission torque converter clutch is faulty.
• A diagnostic of the ECU (Engine Control Unit) will be performed, if the voltage is not low and sensors are fine.

Common Mistakes When Diagnosing the P2770 Code

P2770 is an uncommon code and following all diagnostic steps is important so nothing is overlooked. Transmission torque converter clutch should be properly examined and replaced, if faulty. Always confirm low voltage for converter clutch before any replacement is performed and avoid going to the ECU straightaway.

P2769 - Torque Converter Clutch Circuit Low