What Does P0774 Mean?
The TCM has detected an intermittent electrical fault in the Shift Solenoid E circuit. The electrical connection to solenoid E is cutting in and out unpredictably, causing inconsistent shift behavior. This type of intermittent fault is typically caused by a failing solenoid coil, a loose connector, or a damaged wire that only loses contact under vibration, heat, or specific operating conditions.
Common Causes
30%
Intermittent internal solenoid E coil failure (thermal-sensitive open or short)
30%
Loose, corroded, or damaged connector pins at the transmission harness connector
20%
Chafed or intermittently broken wire in the transmission harness
12%
TCM connector with loose pin or intermittent contact
8%
Intermittent TCM driver circuit fault
Diagnostic Steps
1
Review freeze frame data to determine the exact conditions (RPM, vehicle speed, transmission temperature) when the code sets.
2
Inspect the transmission external harness connector for moisture intrusion, corrosion, pushed-back pins, or inadequate terminal tension.
3
Measure solenoid E resistance at multiple temperatures — test cold and at full operating temperature to catch thermal-sensitive coil failures.
4
Perform a comprehensive wiggle test on the harness between the TCM and transmission, monitoring solenoid E circuit continuity in real time.
5
Verify TCM connector pin fit and condition — apply dielectric grease after cleaning if corrosion is found.
6
If wiring and connectors pass all tests, replace solenoid E as intermittent coil failures are a common root cause.
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The TCM has detected an intermittent electrical fault in the Shift Solenoid E circuit. The electrical connection to solenoid E is cutting in and out unpredictably, causing inconsistent shift behavior. This type of intermittent fault is typically caused by a failing solenoid coil, a loose connector, ...
The most common cause of P0774 (Shift Solenoid E Intermittent) is: Intermittent internal solenoid E coil failure (thermal-sensitive open or short)
Typical repair costs for P0774 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent shifting problems may occur unpredictably. The vehicle might momentarily slip between gears or enter limp mode during driving. While generally still drivable, the unpredictable nature of the fault warrants prompt attention, especially for highway driving.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0774 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
