The P0747: Pressure Control Solenoid A Stuck On refers to a situation where the pressure control solenoid “A” is stuck in the “on” position, preventing the proper regulation of transmission fluid pressure. This can be caused by a faulty solenoid, wiring issues, or a malfunction in the transmission control system.
P0747 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0747: Pressure Control Solenoid A Stuck On |
| Is it serious? | Yes, this can lead to erratic shifting and possible transmission damage if not resolved. |
| Possible causes | – Pressure control solenoid A stuck on – Faulty solenoid – Wiring or connector issues |
| How to diagnose? | – Test solenoid A for stuck-on condition – Inspect wiring and connectors – Replace faulty solenoid if necessary |
P0747 Meaning
The P0747 code indicates that pressure control solenoid “A” is stuck in the “on” position, meaning it continuously regulates high pressure. This may result in improper shifting, harsh gear changes, and potentially lead to transmission damage over time. The issue could be due to a stuck solenoid, wiring problems, or a fault in the control circuit.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional transmission-related codes that may provide more context on the issue. | OBD-II Scanner |
| Test Solenoid A for Stuck-On Condition | Use a diagnostic tool to test solenoid A for electrical functionality. Ensure it is not stuck in the “on” position by checking for excessive pressure regulation. | Multimeter, Diagnostic Scanner |
| Inspect Wiring and Connectors | Inspect the wiring and connectors leading to solenoid A for signs of damage, wear, or loose connections. Repair or replace as needed. | Flashlight, Multimeter, Safety Gloves |
| Check Transmission Fluid | Inspect the transmission fluid level and quality, as low or contaminated fluid can affect solenoid performance. | Transmission Fluid Tester, Dipstick |
| Replace Faulty Solenoid | If solenoid A is stuck or malfunctioning, replace it with a new one according to manufacturer specifications. | Replacement Parts, Wrenches, Screwdrivers |
| Clear the Code and Test Drive | After making repairs, clear the code using an OBD-II scanner and take the vehicle for a test drive to verify that the issue has been resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, rescan the vehicle to ensure that the P0747 code has not returned. | OBD-II Scanner |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko