Technical Description of OBD-II Trouble Code
The Pressure Control Solenoid E is operating intermittently.
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 brands such as Nissan, Land Rover, Cadillac, Chevrolet, Chevy, Dodge, GMC, Mercedes Benz, VW, Audi, Pontiac, Saturn, Skoda, Honda, etc. Although it is a generic code, the specific repair steps may vary depending on the year, make, model, and powertrain configuration.
When the P2726 OBD-II trouble code is set, it means that the Powertrain Control Module (PCM) has detected a problem with the Transmission Pressure Control Solenoid “E”. Most automatic transmissions have three solenoids (A, B, and C), but in this case, there are five solenoids (A, B, C, D, and E). The trouble codes related to the “E” solenoid are codes P2722, P2723, P2724, P2725, and P2726. The specific code is determined by the specific malfunction that triggers the PCM and causes the Check Engine Light to illuminate.
The purpose of the Transmission Pressure Control Solenoids is to regulate the fluid pressure for the proper operation of an automatic transmission. The PCM receives an electronic signal based on the pressure within the solenoids. An automatic transmission relies on bands and clutches that change gears by having fluid pressure in the right place at the right time. Based on signals from devices that monitor the vehicle’s speed, the PCM controls the pressure solenoids to direct fluid at the appropriate pressure to different hydraulic circuits that change the transmission gear ratio at the correct time.
The code P2726 is set by the PCM when the Pressure Control Solenoid “E” is operating intermittently.
Example of a transmission pressure control solenoid:
What is the severity of this DTC?
This code is initially considered moderate in severity, but if not addressed promptly, it can escalate to a more severe level.
What are some of the symptoms of the code?
Symptoms of a P2726 trouble code may include:
What are some of the common causes of the code?
Causes for this P2726 transmission code may include:
What are some P2726 troubleshooting steps?
Prior to beginning the troubleshooting process for any malfunction, it is recommended to research the Technical Service Bulletins (TSB’s) for the specific vehicle based on the year, model, and transmission. This can save time by providing guidance in the right direction. It is also important to check the vehicle records to determine the last time the filter and fluid were changed, if possible.
Fluid & Wiring Inspections
The first step is to check the fluid level and examine the condition of the fluid for contamination. Before changing the fluid, it is advisable to check the vehicle records to verify the last time the filter and fluid were changed.
Next, perform a detailed visual inspection to check the condition of the wiring for any obvious defects. Inspect the connectors and connections for security, corrosion, and damaged pins. This should include all wiring and connectors related to the transmission pressure control solenoids, transmission pump, and PCM. Depending on the configuration, the transmission pump may be electrically or mechanically driven.
Advanced Steps
The advanced steps are highly specific to each vehicle and require specialized equipment for accurate performance. These procedures involve using a digital multimeter and referring to the specific technical references for the vehicle. It is important to obtain the specific troubleshooting guidelines for the vehicle before proceeding with the advanced steps. Voltage and fluid pressure requirements may vary based on the specific model and transmission design.
Continuity Checks
Unless otherwise specified by the technical data, the normal readings for wiring and connections should be 0 ohms of resistance. Continuity checks should always be performed with the power removed from the circuit to avoid shorting the circuit and causing further damage. Resistance or lack of continuity indicates faulty wiring that is open or shorted and requires repair or replacement.
What are some common repairs for this code?
Possible misdiagnosis may include:
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 while keeping all other codes active. If you are interested in this option, please upload your ECU file to our portal.
