P0746 on Opel
Pressure Control Solenoid Performance/Stuck Off
P0746 on Opel vehicles indicates pressure control solenoid performance/stuck off. Au7o has documented this code across 1 Opel model — most commonly on Insignia. 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 Opel range from $150 to $2,500, 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 Opel by Model
Opel Insignia(1 issue)
- Insignia A Aisin AF40 Harsh Shifts / Shudder2008-2017
The Aisin AF40 6-speed automatic in Insignia A (2008-2017) develops harsh shifts, shudder during lock-up, and delayed engagement, typically by 100,000-160,000 km. Root cause is degraded ATF and worn solenoids; Opel's "lifetime fill" claim is widely disputed.
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View P0746 across all makes →Frequently Asked Questions
What does P0746 mean on Opel?▼
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 Opel specifically, this code is documented across 1 model.
What causes P0746 on Opel vehicles?▼
Common causes on Opel: 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 Opel?▼
Repair costs on Opel range from $150 to $2,500, depending on the specific model and root cause.
Which Opel models have P0746 documented?▼
Au7o has documented P0746 on 1 Opel model: Insignia.