P0750 on Kia
Shift Solenoid A Malfunction
P0750 on Kia vehicles indicates shift solenoid a malfunction. Au7o has documented this code across 1 Kia model — most commonly on K5. This code indicates the transmission control system detected a malfunction in shift solenoid 'A', one of the electrically operated valves that direct hydraulic fluid to engage gears. The computer commands these solenoids to control upshifts and downshifts, and it monitors their circuits and the resulting gear changes. When solenoid A doesn't respond electrically as expected — or the resulting shift doesn't happen correctly — this code is set. You may notice harsh, delayed, or missing shifts, or the transmission may enter a fail-safe (limp) mode.
Common Causes of P0750
- •Failed or stuck shift solenoid A
- •Open, shorted, or chafed solenoid wiring
- •Corroded or loose transmission connector
- •Low, dirty, or degraded transmission fluid
- •Clogged solenoid or valve body passages
- •Internal valve body or hydraulic fault
- •Faulty transmission control module (TCM)
P0750 on Kia by Model
Kia K5(1 issue)
- Transmission Control Unit (TCU) Software Fault Causing Harsh Upshifts or Limp Mode (8-Speed AT)2021-2024
K5 models equipped with the 8-speed conventional automatic transmission (paired with the 2.5T Turbo engine in higher trims) have generated complaints of harsh, jerky upshifts—particularly the 1-2 and 2-3 shifts—and in some cases the transmission entering limp mode (restricted to lower gears) after a fault is detected. This is distinct from the DCT shudder issue and specifically affects the hydraulic 8AT unit. TSBs from Kia/Hyundai on the shared 8AT platform have addressed TCU software logic for shift pressure and torque converter clutch engagement.
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View P0750 across all makes →Frequently Asked Questions
What does P0750 mean on Kia?▼
P0750 stands for "Shift Solenoid A Malfunction." This code indicates the transmission control system detected a malfunction in shift solenoid 'A', one of the electrically operated valves that direct hydraulic fluid to engage gears. The computer commands these solenoids to control upshifts and downshifts, and it monitors their circuits and the resulting gear changes. When solenoid A doesn't respond electrically as expected — or the resulting shift doesn't happen correctly — this code is set. You may notice harsh, delayed, or missing shifts, or the transmission may enter a fail-safe (limp) mode. On Kia specifically, this code is documented across 1 model.
What causes P0750 on Kia vehicles?▼
Common causes on Kia: Failed or stuck shift solenoid A, Open, shorted, or chafed solenoid wiring, Corroded or loose transmission connector, Low, dirty, or degraded transmission fluid, Clogged solenoid or valve body passages. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0750 on a Kia?▼
Repair costs vary widely depending on the root cause and specific Kia model.
Which Kia models have P0750 documented?▼
Au7o has documented P0750 on 1 Kia model: K5.