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.
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 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 P0735 across all makes →Frequently Asked Questions
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 vary widely depending on the root cause and specific Lincoln model.
Which Lincoln models have P0735 documented?▼
Au7o has documented P0735 on 1 Lincoln model: Aviator.