How to Fix P0778 Shift Solenoid E Intermittent

Introduction

If you’re experiencing issues with your car’s transmission, specifically the P0778 Shift Solenoid E Intermittent code, you’re not alone. This code is a common problem that many car owners face, but fortunately, it’s not a difficult issue to fix. In this article, we’ll provide you with a step-by-step guide on how to fix the P0778 Shift Solenoid E Intermittent code.

What is the P0778 Shift Solenoid E Intermittent Code?

The P0778 Shift Solenoid E Intermittent code is a diagnostic trouble code (DTC) that indicates a problem with the transmission’s shift solenoid E circuit. The shift solenoid E is responsible for controlling the flow of transmission fluid to the clutch pack that engages the gears. When the shift solenoid E circuit is interrupted or malfunctioning, it can cause the transmission to shift erratically or not at all.

Step-by-Step Guide to Fixing the P0778 Shift Solenoid E Intermittent Code

Step 1: Check the Transmission Fluid Level

The first step in fixing the P0778 Shift Solenoid E Intermittent code is to check the transmission fluid level. Low transmission fluid levels can cause a variety of transmission problems, including the P0778 code. To check the transmission fluid level, follow these steps:

1. Make sure your car is parked on a level surface and the engine is running.
2. Locate the transmission dipstick, which is usually located near the back of the engine compartment.
3. Remove the dipstick and wipe it clean with a rag or paper towel.
4. Reinsert the dipstick and remove it again to check the fluid level. The fluid level should be between the “full” and “add” marks on the dipstick.
5. If the fluid level is low, add transmission fluid until it reaches the “full” mark on the dipstick.

Step 2: Check the Shift Solenoid E Circuit

If the transmission fluid level is not the issue, the next step is to check the shift solenoid E circuit. To do this, you’ll need a digital multimeter. Follow these steps:

1. Disconnect the negative battery cable to prevent any electrical shock.
2. Locate the shift solenoid E, which is usually located on the transmission valve body.
3. Disconnect the electrical connector from the shift solenoid E.
4. Set your multimeter to measure resistance (ohms).
5. Touch the multimeter leads to the two pins on the shift solenoid E connector. The resistance should be between 20 and 30 ohms.
6. If the resistance is outside of this range, replace the shift solenoid E.

Step 3: Check the Wiring and Connectors

If the shift solenoid E is not the issue, the next step is to check the wiring and connectors. Follow these steps:

1. Inspect the wiring and connectors for any damage or corrosion.
2. Repair or replace any damaged wiring or connectors.
3. Reconnect the electrical connector to the shift solenoid E.

Step 4: Clear the Code

Once you’ve fixed the issue, you’ll need to clear the P0778 Shift Solenoid E Intermittent code. To do this, you’ll need an OBD-II scanner. Follow these steps:

1. Connect the OBD-II scanner to the diagnostic port under the dashboard.
2. Turn the ignition on, but do not start the engine.
3. Select “clear codes” from the menu on the scanner.
4. Disconnect the scanner and start the engine. The code should be cleared.

Conclusion

Fixing the P0778 Shift Solenoid E Intermittent code is a relatively simple process that can be done at home with a few basic tools. By following the steps outlined in this article, you can save yourself time and money by avoiding a trip to the mechanic.

FAQs

1. Can I still drive my car with the P0778 Shift Solenoid E Intermittent code?

It’s not recommended to drive your car with the P0778 code as it can cause further damage to your transmission. It’s best to fix the issue as soon as possible.

2. How much does it cost to fix the P0778 Shift Solenoid E Intermittent code?

The cost to fix the P0778 code can vary depending on the make and model of your car and the severity of the issue. However, it’s generally a relatively inexpensive fix that can be done at home.

3. How can I prevent the P0778 Shift Solenoid E Intermittent code from happening again?

Regular maintenance, including checking and changing your transmission fluid, can help prevent the P0778 code from happening again. It’s also important to address any transmission issues as soon as they arise to prevent further damage.