P2829Pressure Control Solenoid K 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
- P2829 means valve K remains hydraulically inactive although it is commanded on. In GM's 2023 Corvette dual-clutch transmission K is the selector pilot valve, which steers the selector spool of the shift-rod hydraulics. The check runs inside a synchronizer integrity routine that starts after a gear or component fault: the TCM orders small rod movements and measures them. If the rods respond as though the selector were off (no more than 100 µm of intended travel, over 100 µm on the complementary rod) and the valve's current profile check fails three times, with cooler-out oil at 40 °C or warmer, the Type A code is stored. Ford handles the same selector pilot valve of its TR9070 under P27D9 rather than a K code. Gear selection on one shaft may be lost.
- What you may notice
- Some gears unavailable
- Hesitation or failed gear preselection
- MIL on
- Likely causes
- LikelySelector pilot valve stuck in the off position
- PossibleAbrasion particles in the transmission fluid
- RareSelector spool itself stuck (same symptom, different part)
- 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: €300 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.