P0735 on Lincoln
Gear 5 Incorrect Ratio
P0735 on Lincoln vehicles indicates gear 5 incorrect ratio. Au7o has documented this code across 1 Lincoln model — most commonly on Aviator. This code means the Transmission/Powertrain Control Module detected an incorrect gear ratio in 5th gear. By comparing input shaft speed to output shaft speed, the module verifies each commanded gear; when the 5th-gear ratio is wrong, P0735 is stored. This typically means the transmission is slipping or failing to lock into 5th gear due to fluid, friction, or solenoid issues. Drivers may notice slipping at highway speeds, RPM flare, poor fuel economy, or limp mode. Typical repair costs on Lincoln range from $800 to $7,000, depending on the specific model and root cause.
Common Causes of P0735
- •Low or degraded/burnt transmission fluid
- •Slipping clutch packs or worn friction elements in 5th gear
- •Stuck or faulty shift solenoid
- •Valve body / internal hydraulic leak or restriction
- •Worn or failing torque converter
- •Faulty input or output speed sensor
- •Internal mechanical wear inside the transmission
P0735 on Lincoln by Model
Lincoln Aviator(1 issue)
- 10R60/10R80 MHT Harsh/Delayed Shifts from Sticking Valve Body and CDF Clutch Sleeve Movement2020-2023
Many 2020-2023 Aviators with the 10R60 10-speed automatic (3.0L EcoBoost) and 10R80 MHT (Grand Touring PHEV) exhibit harsh 1-2/2-3 upshifts, clunky engagements into Drive or Reverse, and delayed shifts, with or without illuminated MIL. Root cause per Ford TSB 23-2250 is software/solenoid ID strategy, sticking valves in the main control valve body, and/or axial movement of the CDF clutch cylinder sleeve. Ford issued multiple TSBs (21-2316, 22-2102, 22-2428, 23-2250, 24-2046) and a related 10R80 class action is active in 2025 for sibling Ford/Lincoln models.
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What does P0735 mean on Lincoln?▼
P0735 stands for "Gear 5 Incorrect Ratio." This code means the Transmission/Powertrain Control Module detected an incorrect gear ratio in 5th gear. By comparing input shaft speed to output shaft speed, the module verifies each commanded gear; when the 5th-gear ratio is wrong, P0735 is stored. This typically means the transmission is slipping or failing to lock into 5th gear due to fluid, friction, or solenoid issues. Drivers may notice slipping at highway speeds, RPM flare, poor fuel economy, or limp mode. On Lincoln specifically, this code is documented across 1 model.
What causes P0735 on Lincoln vehicles?▼
Common causes on Lincoln: Low or degraded/burnt transmission fluid, Slipping clutch packs or worn friction elements in 5th gear, Stuck or faulty shift solenoid, Valve body / internal hydraulic leak or restriction, Worn or failing torque converter. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0735 on a Lincoln?▼
Repair costs on Lincoln range from $800 to $7,000, depending on the specific model and root cause.
Which Lincoln models have P0735 documented?▼
Au7o has documented P0735 on 1 Lincoln model: Aviator.