Torque Converter Clutch Pressure Control Solenoid Stuck On
The P2758 code indicates that the Powertrain Control Module (PCM) has detected the torque converter clutch (TCC) pressure control solenoid circuit is stuck in the 'on' position. This solenoid regulates hydraulic pressure to the TCC, and when stuck on, it can cause the torque converter to remain locked, leading to drivability issues such as stalling, harsh shifting, or poor fuel economy. The problem may be electrical (short circuit, faulty solenoid) or mechanical (stuck valve).
01. Most Common Causes
- Faulty TCC pressure control solenoid
- Short circuit in solenoid wiring or connector
- Internal transmission mechanical failure
- Low or contaminated transmission fluid
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission stuck in gear or harsh shifting
- Engine stalls when coming to a stop
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Test TCC solenoid resistance and power/ground circuits with a multimeter.
Step 4: Check wiring and connectors for damage, corrosion, or shorts.
Step 5: If electrical tests pass, perform a transmission pressure test to confirm solenoid operation.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with the TCC stuck on can cause stalling, transmission damage, or unsafe driving conditions. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost ranges from $50 to $150 for a solenoid replacement if DIY, or $200-$500 at a shop including labor and diagnostics.