P2820Pressure Control Solenoid J 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
- P2820 says valve J, though electrically sound, fails to deliver its hydraulic effect when commanded. On GM ten-speed automatics J is the default disable valve; if it sticks off, the box drops into its hydraulic limp gear (2nd or 7th) while another gear is requested. GM's 2020 tables detect this through gear ratio and clutch slip (50 rpm) and log Type A after 0.25 s. GM PIP5551 blames casting debris or blocked spacer plate orifices on 2017-2018 Malibu with the GF9 nine-speed. Toyota maps P2820 to the SLP valve of the Corolla CVT; T-SB-0289-17 (2014-2017 Corolla, 2017 iM) and S-SB-0002-18 (2016 iM) swap the CVT and reflash the ECM. In the Corvette and Ford TR9070 dual-clutch boxes J holds the park lock, so a stuck-off valve leaves the car in Park.
- What you may notice
- Transmission suddenly holds 2nd or 7th gear
- Binding or jerky drive when the wrong clutches engage
- Vehicle will not leave Park on dual-clutch models
- MIL on
- Likely causes
- LikelyCasting debris or dirt blocking valve J or its passages
- PossibleRestricted orifice in a spacer plate
- PossibleOutdated control logic that misjudges the valve (Toyota CVT)
- RareInternal transmission damage requiring a replacement unit
- 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: €100 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.