P0746 on Kia
Pressure Control Solenoid Performance/Stuck Off
P0746 on Kia vehicles indicates pressure control solenoid performance/stuck off. Au7o has documented this code across 1 Kia model — most commonly on Rio. P0746 means the transmission's pressure control solenoid 'A' is performing poorly or appears stuck in the off (low pressure) position. This solenoid regulates hydraulic line pressure that applies clutches and bands to make smooth, firm shifts; the TCM detects when commanded pressure changes aren't producing the expected response. A stuck-off condition typically means line pressure stays low. You may experience slipping, soft or delayed shifts, harsh engagement, overheating, or the transmission entering limp mode. Typical repair costs on Kia range from $150 to $4,500, depending on the specific model and root cause.
Common Causes of P0746
- •Low, dirty, or degraded transmission fluid
- •Faulty pressure control / EPC solenoid
- •Clogged valve body passages or stuck valve
- •Wiring or connector fault at the solenoid
- •Internal transmission wear (worn clutches, leaking seals)
- •Dirty or clogged transmission filter
- •Faulty transmission control module (less common)
P0746 on Kia by Model
Kia Rio(1 issue)
- CVT/IVT Hesitation, Jerking, and Delayed Engagement at Low Speed2021-2023
Owners have documented hesitation from a stop, delayed engagement into Drive or Reverse, shuddering at low speed, and inconsistent acceleration behavior from the Rio's Intelligent Variable Transmission (IVT/CVT). These complaints are common enough across Hyundai/Kia small-car applications that service information and dealer software updates have been discussed to address shift logic, drivability calibration, and adaptation behavior. In some cases the issue is software-related; in others, internal transmission wear or pulley/belt problems are suspected when symptoms persist.
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What does P0746 mean on Kia?▼
P0746 stands for "Pressure Control Solenoid Performance/Stuck Off." P0746 means the transmission's pressure control solenoid 'A' is performing poorly or appears stuck in the off (low pressure) position. This solenoid regulates hydraulic line pressure that applies clutches and bands to make smooth, firm shifts; the TCM detects when commanded pressure changes aren't producing the expected response. A stuck-off condition typically means line pressure stays low. You may experience slipping, soft or delayed shifts, harsh engagement, overheating, or the transmission entering limp mode. On Kia specifically, this code is documented across 1 model.
What causes P0746 on Kia vehicles?▼
Common causes on Kia: Low, dirty, or degraded transmission fluid, Faulty pressure control / EPC solenoid, Clogged valve body passages or stuck valve, Wiring or connector fault at the solenoid, Internal transmission wear (worn clutches, leaking seals). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0746 on a Kia?▼
Repair costs on Kia range from $150 to $4,500, depending on the specific model and root cause.
Which Kia models have P0746 documented?▼
Au7o has documented P0746 on 1 Kia model: Rio.