P0766 on Lincoln
Shift Solenoid D Performance/Stuck Off
P0766 on Lincoln vehicles indicates shift solenoid d performance/stuck off. Au7o has documented this code across 1 Lincoln model — most commonly on Aviator. This code means the Transmission/Powertrain Control Module detected that Shift Solenoid 'D' is performing poorly or appears stuck in the off position. Shift solenoids direct hydraulic fluid inside the transmission to engage the proper gears or apply the torque converter clutch, and the module monitors whether commanded shifts actually occur. P0766 sets when solenoid D isn't producing the expected result — the gear change tied to it doesn't happen correctly. This can cause harsh or missed shifts, slipping, or being stuck in a gear, sometimes triggering limp mode.
Common Causes of P0766
- •Stuck or failed shift solenoid D
- •Low or contaminated transmission fluid
- •Clogged solenoid screen or valve body passage
- •Open, shorted, or corroded solenoid wiring/connector
- •Valve body wear or sticking spool valve
- •Internal hydraulic leak affecting the solenoid circuit
- •Faulty TCM/PCM solenoid driver
P0766 on Lincoln by Model
Lincoln Aviator(1 issue)
- 10R60/10R80 MHT Harsh or Delayed Engagement and Shifts (TSB 22-2428)2020-2023
Some 2020-2023 Lincoln Aviators equipped with a 10R60 and built on or before December 23, 2022, or a 10R80 MHT and built on or before August 15, 2022, may have harsh or delayed engagement and/or harsh or delayed shifts. Ford TSB 22-2428 says the condition may involve PCM/TCM software, the transmission solenoid-ID strategy, sticking main-control valves, or axial movement of the CDF clutch-cylinder sleeve. The complaint may occur with or without a malfunction indicator and the bulletin's listed transmission DTCs. The symptom alone does not select a valve body, CDF cylinder, or complete transmission.
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View P0766 across all makes →Frequently Asked Questions
What does P0766 mean on Lincoln?▼
P0766 stands for "Shift Solenoid D Performance/Stuck Off." This code means the Transmission/Powertrain Control Module detected that Shift Solenoid 'D' is performing poorly or appears stuck in the off position. Shift solenoids direct hydraulic fluid inside the transmission to engage the proper gears or apply the torque converter clutch, and the module monitors whether commanded shifts actually occur. P0766 sets when solenoid D isn't producing the expected result — the gear change tied to it doesn't happen correctly. This can cause harsh or missed shifts, slipping, or being stuck in a gear, sometimes triggering limp mode. On Lincoln specifically, this code is documented across 1 model.
What causes P0766 on Lincoln vehicles?▼
Common causes on Lincoln: Stuck or failed shift solenoid D, Low or contaminated transmission fluid, Clogged solenoid screen or valve body passage, Open, shorted, or corroded solenoid wiring/connector, Valve body wear or sticking spool valve. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0766 on a Lincoln?▼
Repair costs vary widely depending on the root cause and specific Lincoln model.
Which Lincoln models have P0766 documented?▼
Au7o has documented P0766 on 1 Lincoln model: Aviator.