The OBD2 code P2723 indicates an issue with the Pressure Control Solenoid 5 being “stuck off” in your vehicle’s transmission system. This component is crucial for managing the hydraulic pressure needed to shift gears smoothly. When it malfunctions, drivers may experience issues with gear engagement, particularly when trying to accelerate or shift gears.
P2723 quick overview
| Meaning | P2723: Pressure Control Solenoid 5 Stuck Off |
| Is it serious? | Yes, it can lead to significant transmission problems if not addressed promptly. |
| Possible causes | – Faulty pressure control solenoid – Hydraulic blockages in the transmission – Electrical issues in the transmission control circuit – Low transmission fluid or fluid leaks |
| How to diagnose? | Check the transmission fluid level and quality Inspect the wiring and connections for the solenoid circuit Test the pressure control solenoid for proper operation Scan for additional codes that might indicate related issues Air check the transmission hydraulic circuits for leaks |
P2723 Meaning
For those unfamiliar with car maintenance, imagine your transmission as a complex system of gears and hydraulics that manage your car’s movement. The Pressure Control Solenoid 5 is like a precision valve that controls how much fluid pressure is applied to change gears.
If it’s “stuck off,” it means it’s not properly regulating this pressure, which can lead to your car struggling to shift gears or move as expected. It’s a problem that definitely needs a professional’s attention to prevent further damage to your transmission.
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- OBD-II scanner basics
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How to fix P2723 – learn from mechanics
I looked into P2723 service cases at iatn.com website where in the private forums the mechanics seek advice from other mechanics. I looked up a bunch of cases to help you decide how to fix your issue and see what would a real mechanic do to solve it.
Case #1: Saturn
Vehicle Information 2008 Saturn Outlook XR 3.6L Transmission
Issue + Repair History
- Customer complaint of intermittently no drive and MIL on.
- OBD2 codes: P2723 (Pressure control solenoid 5 – stuck off) and P0756 (Shift solenoid 2 valve performance – stuck off).
- Initial test drive showed no problem, but P0756 returned after code clearing.
- Replaced broken 1 2 3 4 clutch wave plate, installed rebuild kit, and replaced TEHCM with reconditioned one from Dorman.
- Problem persists, especially when cold, with difficulty going into gear and P0756 returning.
Other OBD2 Codes + Test Results
- P2723: Cleared code, did not return.
- P0756: Cleared code, returns.
Mechanic Suggestions
- Inspect and air check the TECHM (Transmission Electronic Hydraulic Control Module).
- Check for any air hissing when air checking the 1234 piston.
- Consider relearning fast adapts, especially after replacing internal parts or TCM.
Final Fix
- Discovered a bad 1234 piston despite visual inspection indicating it was fine.
- Replaced the piston, eliminating the air hissing issue.
- Problem resolved.
Case #2: Chevrolet
Vehicle Information 2011 Chevrolet Cruze LS 1.8L All forward gears
Issue + Repair History
- No forward motion, no codes, but reverse works.
- Fluid was dark, indicating potential internal issues.
- Attempts to engage forward gears failed, only engaging in a high gear after many attempts.
- Threw a P2723 (Pressure Control Solenoid valve 5 stuck off) code when engaging forward in manual shift mode.
Other OBD2 Codes + Test Results
- P2723: Thrown when attempting to engage forward gears.
Mechanic Suggestions
- Check transmission data using a scan tool to diagnose fail-safe mode, especially focusing on switch states.
- Inspect original fluid for signs of burning or metal debris.
- Investigate solenoid pack/module for potential failure.
- Verify if the switch states on the scan tool match the command inputs at the transmission.
- Consider the possibility of a bad TEHCM (Transmission Electronic Hydraulic Control Module) or a leaking 1234 clutch piston.
- Suggest pricing out used or remanufactured transmission units if further diagnostics prove costly and customer attitude warrants it.
Final Fix
- Replaced and programmed the TCM (Transmission Control Module), resolving the issue.
Case #3:
Vehicle Information 2007 Cadillac Escalade 6.2L
Issue + Repair History
- Transmission sets multiple codes randomly: P2723 (clutch pressure control solenoid 5 stuck off), P2714 (pressure control solenoid 4 stuck off), and P0756 (shift solenoid 2 performance/stuck off).
- Line pressure test showed 55psi at idle, 90psi in reverse, and rising with throttle.
- Trans was overhauled; all clutches inspected and found to be in good condition.
- Cracks found in pump cover/stator assembly; replaced part.
- Check for any issues with internal wiring, terminals, or damage.
Other OBD2 Codes + Test Results
- P2723: Clutch pressure control solenoid 5 stuck off
- P2714: Pressure control solenoid 4 stuck off
- P0756: Shift solenoid 2 performance/stuck off
Mechanic Suggestions
- Perform a TCM reset and transmission adaptive reset to allow adaptation to new pressures and solenoid behavior after overhaul.
- Check for any internal hydraulic issues, such as cracks in drums or housings bleeding pressure.
- Consider performing a solenoid cleaning function if available.
- Inspect the ignition switch for any issues, as multiple electrical codes can sometimes be traced back to it.
Final Fix
- Disassembled valve body and found the #1 check ball wedged in the separator plate.
- Reassembled the transmission; codes no longer set.
- Experienced a 2-second delay when put into drive; performed a transmission adaptive reset to resolve the issue.
How to diagnose P2723
I made you an overview of solving this DTC, based on all the advice that was suggested by certified mechanics to address this issue in previously mentioned service cases.
Based on the real service cases, here’s a table highlighting common diagnostic steps and advice:
| Diagnostic Step | Explanation |
|---|---|
| Check the transmission fluid level and quality | Ensure there’s enough fluid and it’s not contaminated. |
| Inspect wiring and connections | Look for damaged wires or loose connections in the solenoid circuit. |
| Test the pressure control solenoid | Verify if the solenoid operates correctly and isn’t stuck. |
| Scan for additional OBD2 codes | Identify if there are related issues in the transmission system. |
| Air check the transmission hydraulic circuits | Detect leaks or blockages that could affect pressure control. |
| Inspect and air check the TECHM | Specifically for leaks or issues in the control module. |
| Consider replacing or repairing internal components | Based on diagnostics, replace faulty pistons or solenoids. |
| Perform a TCM reset and adaptive reset | Reset the transmission control module to adapt to repairs. |
Addressing a P2723 code involves thorough diagnostics to pinpoint the exact cause, whether it’s a faulty solenoid, electrical issues, or hydraulic blockages. Always consider seeking professional help, especially with complex transmission systems, to ensure a proper fix.
Car Diagnostics Training
- Car Electrical basics
- OBD-II scanner basics
- How to use an OBD reader
- Introduction to a Bi-directional Scan tool
- OBD scanner buyer’s guide + discounts
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