P2819Pressure Control Solenoid H Electrical
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2819 is a collective electrical code for solenoid H: the module knows that coil or wiring is faulty but does not say whether the circuit is open or shorted. Mercedes-Benz uses it on the 8G-DCT dual-clutch gearbox (transmission 724.1 in the A-Class, CLA and GLA/GLB families): P281900, an electrical fault of pressure regulating valve 8, is one of the codes its guided diagnosis tool in XENTRY handles, alongside P281600 for a functional fault of the same valve. GM, by contrast, reports H circuit faults as separate codes P281B, P281D and P281E. CARB 13 CCR 1968.2 requires transmission output circuits to be checked for such faults. Measure coil resistance and the connection to the module before replacing the valve or the mechatronic unit.
- What you may notice
- MIL or transmission warning on
- Limp-home mode with restricted gears
- Jerky starts or rough shifts
- Likely causes
- LikelyCoil of valve H open or shorted
- PossiblePoor contact between valve and mechatronic or module board
- PossibleDamaged transmission wiring or connector
- 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 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.