P0740 on Saturn
Torque Converter Clutch Circuit Malfunction
P0740 on Saturn vehicles indicates torque converter clutch circuit malfunction. Au7o has documented this code across 1 Saturn model — most commonly on Vue. This code indicates a malfunction in the torque converter clutch (TCC) circuit of an automatic transmission. The torque converter clutch mechanically locks the engine to the transmission at cruising speed to improve fuel economy and reduce slippage, and it is engaged by a solenoid controlled by the transmission computer. The code sets when the computer detects an electrical problem with the clutch circuit or sees that the clutch is not engaging or holding as expected. Common signs include slipping, shuddering, poor fuel economy, or stalling when coming to a stop. Typical repair costs on Saturn range from $1,200 to $4,500, depending on the specific model and root cause.
Common Causes of P0740
- •Faulty torque converter clutch (TCC) solenoid
- •Low or contaminated transmission fluid
- •Wiring or connector fault in the TCC circuit
- •Worn or failing torque converter
- •Valve body wear or sticking valves
- •Internal transmission electrical short
- •Faulty transmission control module
P0740 on Saturn by Model
Saturn Vue(1 issue)
- Vue VTi CVT Catastrophic Failure (2002-2005)2002-2005
Early Saturn Vue (2002-2005) was offered with the GM VT25 (VTi) continuously-variable transmission paired with the 2.2L Ecotec. The CVT was infamously unreliable — failure rates so high that GM extended warranty to 5 years/75,000 miles, and many independents won't touch them. Symptoms: belt slip noise, surge under acceleration, eventual no-drive.
Looking for P0740 on a different make?
View P0740 across all makes →Frequently Asked Questions
What does P0740 mean on Saturn?▼
P0740 stands for "Torque Converter Clutch Circuit Malfunction." This code indicates a malfunction in the torque converter clutch (TCC) circuit of an automatic transmission. The torque converter clutch mechanically locks the engine to the transmission at cruising speed to improve fuel economy and reduce slippage, and it is engaged by a solenoid controlled by the transmission computer. The code sets when the computer detects an electrical problem with the clutch circuit or sees that the clutch is not engaging or holding as expected. Common signs include slipping, shuddering, poor fuel economy, or stalling when coming to a stop. On Saturn specifically, this code is documented across 1 model.
What causes P0740 on Saturn vehicles?▼
Common causes on Saturn: Faulty torque converter clutch (TCC) solenoid, Low or contaminated transmission fluid, Wiring or connector fault in the TCC circuit, Worn or failing torque converter, Valve body wear or sticking valves. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0740 on a Saturn?▼
Repair costs on Saturn range from $1,200 to $4,500, depending on the specific model and root cause.
Which Saturn models have P0740 documented?▼
Au7o has documented P0740 on 1 Saturn model: Vue.