P2723Pressure Control Solenoid E Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2723 means valve E fails to build the pressure its clutch needs, so that element slips or does not engage. GM's eight-speed table ties E to clutch 5 (C4-5-6-7-8-R) and sets the code after 400 rpm of slip lasting 3 s. On the Allison 1000 GM's tables call the valve PCS 1: if the on-coming clutch has not taken hold after 2 s of slip during a forward shift, a Type A fault follows. Bulletin PIP5100A adds a field cause: shrink-wrap from an aftermarket spin-on filter can block the PCS 1 feed hole, giving no or intermittent reverse. On the 2023 Corvette dual-clutch unit it is the system pressure pilot valve, failed when pressure stays more than 3 bar above target (Type A). Subaru lists P2723 among CVT codes in 18-241-26.
- What you may notice
- Delayed, intermittent or no reverse
- Slip or flare in affected gears
- MIL on and range inhibit or fail-safe mode
- Likely causes
- LikelyBlocked feed orifice in the separator plate (foreign material, GM Allison 1000)
- PossibleLow fluid level or pump losing prime, especially on cold starts
- PossibleSolenoid E or its regulator valve sticking
- RareWorn clutch seals leaking apply pressure
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.