What Does P1767 Mean?
The torque converter clutch (TCC) circuit has an electrical or mechanical malfunction preventing proper lockup operation. This affects fuel economy and can cause transmission overheating.
Common Causes
35%
Failed torque converter clutch solenoid
25%
Internal torque converter clutch mechanical failure or slipping
20%
Electrical fault in TCC solenoid circuit wiring or connector
15%
Valve body stuck or damaged TCC control valve
5%
TCM internal driver circuit failure
Diagnostic Steps
1
Step 1: Monitor TCC solenoid command and actual status with scan tool during test drive (should lock in higher gears)
2
Step 2: Measure TCC solenoid resistance at transmission connector (typically 10-40 ohms depending on manufacturer)
3
Step 3: Check for voltage supply and ground at TCC solenoid connector with key on
4
Step 4: Perform TCC solenoid functional test using scan tool bidirectional controls to manually activate solenoid
5
Step 5: Monitor transmission temperature and engine RPM drop when TCC should engage; lack of RPM drop indicates mechanical converter fault
Estimated Repair Cost
$200 - $1,800
Parts + labor, varies by vehicle and location
The torque converter clutch (TCC) circuit has an electrical or mechanical malfunction preventing proper lockup operation. This affects fuel economy and can cause transmission overheating.
The most common cause of P1767 (Torque Converter Clutch Circuit Malfunction) is: Failed torque converter clutch solenoid
Typical repair costs for P1767 range from $200 to $1,800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Reduced fuel economy and possible transmission overheating during highway driving. Vehicle remains drivable but may experience elevated engine RPM at cruising speeds.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1767 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Manufacturer
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