What Does P0745 Mean?
The pressure control solenoid (PCS) circuit has a general malfunction. The pressure control solenoid regulates transmission line pressure to control shift quality and clutch apply force. A malfunction in this circuit can cause harsh shifts, soft/slipping shifts, or transmission failure to shift at all.
Safety Warning
Driving with a failed pressure control solenoid can cause extremely harsh shifts that damage transmission components or slipping shifts that lead to overheating. The transmission may also enter limp mode (single gear only). Minimize driving and have it repaired promptly.
Common Causes
35%
Failed pressure control solenoid (stuck, worn, or electrically failed)
25%
Wiring or connector fault in the PCS circuit (open, short, or high resistance)
20%
Contaminated transmission fluid clogging the solenoid or causing it to stick
12%
Valve body issue — pressure regulator bore worn or debris blocking pressure circuit
8%
TCM/PCM driver circuit failure
Diagnostic Steps
1
Check transmission fluid level and condition — heavily contaminated fluid can clog the pressure control solenoid.
2
Measure pressure control solenoid resistance at the transmission connector — compare to manufacturer specifications.
3
Monitor line pressure vs. commanded pressure via live data — a large discrepancy indicates solenoid or valve body failure.
4
Inspect the transmission connector and external wiring for damage, corrosion, or loose connections.
5
If solenoid and wiring test good, perform a valve body inspection to check for a worn pressure regulator bore or debris.
Estimated Repair Cost
$200 - $2,500
Parts + labor, varies by vehicle and location
The pressure control solenoid (PCS) circuit has a general malfunction. The pressure control solenoid regulates transmission line pressure to control shift quality and clutch apply force. A malfunction in this circuit can cause harsh shifts, soft/slipping shifts, or transmission failure to shift at a...
The most common cause of P0745 (Torque Converter Clutch Circuit Intermittent) is: Failed pressure control solenoid (stuck, worn, or electrically failed)
Typical repair costs for P0745 range from $200 to $2,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Driving with a failed pressure control solenoid can cause extremely harsh shifts that damage transmission components or slipping shifts that lead to overheating. The transmission may also enter limp mode (single gear only). Minimize driving and have it repaired promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0745 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission — Hydraulic Control
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
