Shift Solenoid ‘D’ Performance
Table of contents
P0766 TOYOTA Possible Causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid ‘D’ valve
- Shift solenoid ‘D’ valve harness or connectors
- Shift solenoid ‘D’ valve circuit is open or shorted
How do I fix code P0766 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0766 TOYOTA code
The cost of diagnosing the P0766 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The P0766 code is detected when the gear required by the Engine Control Module (ECM) does not match the actual gear when driving
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission will not shift gears
P0766 TOYOTA Description
The Engine Control Module (ECM) uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D gear). Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).