Shift Solenoid C Performance
Shift Solenoid C isn't responding properly, like a stuck gear shifter that won't engage smoothly. The transmission control module detected the solenoid isn't performing within expected electrical or hydraulic parameters.
The ECM monitors solenoid C's electrical current draw and response time during shift commands. It compares actual pressure changes and gear engagement timing against expected values. When resistance is too high, current delivery is weak, or shift timing lags beyond threshold, a fault is logged.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Solenoid Current Draw | 0.5–2.0 amps | Below 0.4 amps or above 2.5 amps |
| Shift Response Time | 100–300 ms | Above 500 ms or no response detected |
Code P1769 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P1769 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.