Technical Description of OBD-II Trouble Code
The Shift Solenoid D is stuck in the on position.
What does that mean?
This is a generic diagnostic trouble code (DTC) for transmission issues and is typically found in OBD-II vehicles with automatic transmissions.
This can apply to various vehicle makes and models, including Chrysler, Ford, Dodge, Hyundai, Kia, Ram, Lexus, Toyota, Mazda, Honda, VW, and others. The specific repair steps may vary depending on the year, make, model, and powertrain configuration.
Most automatic transmissions have multiple shift solenoids, depending on the number of gears. The trouble codes associated with the “D” solenoid are P0765, P0766, P0767, P0768, and P0769, depending on the specific malfunction that triggers the code and illuminates the Check Engine Light. If your vehicle has an Overdrive or other transmission warning lamp, it may also be illuminated.
The purpose of the Shift Solenoid Circuit is for the Powertrain Control Module (PCM) to monitor the shift solenoids and control the flow of fluid between different hydraulic circuits, allowing the transmission to change gears at the appropriate time. This process optimizes engine performance at the lowest RPM possible.
Automatic transmissions rely on bands and clutches to shift gears, which requires proper fluid pressure. The transmission solenoids open or close valves in the valve body to direct transmission fluid to the clutches and bands, ensuring smooth shifting as the engine accelerates.
When the PCM detects a malfunction in the Shift Solenoid “D” Shift Circuit, it can trigger various codes depending on the specific vehicle, transmission, and number of gears. In this case, the P0767 OBD-II trouble code indicates a detected stuck on transmission Shift Solenoid “D”.
Example of shift solenoids:
What is the severity of this DTC?
This code typically starts as moderate in severity but can quickly progress to a more severe level if not addressed promptly.
What are some of the symptoms of the code?
Symptoms of a P0767 trouble code may include:
What are some of the common causes of the code?
Possible causes for this P0767 transmission code include:
What are some P0767 troubleshooting steps?
Prior to troubleshooting, it is recommended to research the Technical Service Bulletins (TSB’s) specific to your vehicle’s year, model, and transmission. This can save time by providing guidance in the right direction. Additionally, checking the vehicle records to determine when the filter and fluid were last changed, if possible, is advised.
Fluid & Wiring Inspections
The first step is to ensure the fluid level is correct and inspect the fluid for contamination. Then, visually inspect the associated wiring for any obvious defects such as scraping, rubbing, bare wires, or burn spots.
Next, check the connectors and connections for security, corrosion, and damaged pins. This includes all wiring and connectors related to the transmission solenoids, transmission pump, and PCM. Additionally, inspect the transmission linkage for security and any binding issues, based on the configuration.
Advanced Steps
The advanced steps are specific to each vehicle and require appropriate advanced equipment for accurate diagnosis. These procedures involve using a digital multimeter and referencing the technical data for the specific vehicle. Voltage requirements will vary based on the vehicle’s year and model. It is important to follow the specific troubleshooting chart for your vehicle.
Continuity Checks
Continuity checks should always be performed with the power removed from the circuit. Normal readings for wiring and connections should show 0 ohms of resistance, unless otherwise specified by the technical data. Resistance or lack of continuity indicates faulty wiring that is either open or shorted and must be repaired or replaced.
What are some common repairs for this code?
We always recommend seeking professional mechanical service to address this issue. However, if that is not possible, we offer the option to permanently delete this specific DTC. All other codes will continue to be addressed. If you are interested in this option, please upload your ECU file to our portal.
