P0765 - SHIFT SOLENOID "D" MALFUNCTION
Description of DTC code P0765
Automatic transmissions have several shift solenoids, which are in charge of the circulation of the transmission fluid between the different hydraulic circuits. This process consists of changing the transmission ratio at the most appropriate time so that it can be achieved a higher engine performance at the lowest possible revolutions.
On the other hand, good transmission performance depends largely on the proper belt and clutch shifting, which is achieved by accurate fluid pressure at the right time and place. Solenoids open or close the valves in the body, allowing fluid to pass to the clutches and belts.
When the Powertrain Control Module (PCM) finds that the shift solenoid circuit has a malfunction, a series of fault codes may be set. In this case, the DTC P0765 OBD2 indicates a general malfunction with the "D" shift solenoid circuit.
Symptoms of fault code P0765
- Check Engine light ON.
- The transmission slips.
- Transmission overheating.
- Lower fuel efficiency.
- The limp mode is activated.
Causes of OBD2 P0765
The reasons for setting the P0765 OBDII diagnostic code are:
- Perhaps the transmission fluid level is excessively below the required level.
- The transmission fluid may be dirty or contaminated.
- The valve body may be faulty.
- Possibly the hydraulic passages are blocked.
- The "D" shift solenoid connector or wires, or the solenoid itself, could be defective.
Possible solutions of the DTC code P0765
To troubleshoot the P0765 OBD2 trouble code, try this:
- Check the Technical Service Bulletins (TSBs) that are available for your vehicle.
- Check that the transmission fluid level is right. In case you find a low level, make sure it is not due to leaks. If such leaks are found, repair them and supply the necessary fluid.
- Check that all wiring and connectors that are connected to the "D" shift solenoid are in good working condition. If necessary, replace any deficient components.
- With a multimeter check that the wiring resistance is 0 ohms. If there is a lack of continuity, it is because of a short circuit.
- Replace the "D" shift solenoid.
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