P2DEBCylinder 2 Intake Valve Lift Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2DEB singles out cylinder 2: its intake valve lift misses the target or follows a command too late. Lift control for each cylinder separately is the hallmark of electro-hydraulic systems like Fiat's MultiAir, sold by Schaeffler as UniAir: per cylinder, a solenoid decides how much of the cam stroke is passed through an oil-filled chamber to the intake valves; once it opens, the link collapses and a spring takes over. FCA reports faults on its 2.4 L MultiAir with its own per-cylinder P1xxx codes (P1037, P103A, P103D, P1040 for a valve shorted to ground) and has technicians measure the PCM driver pins, which should read about 15 kOhm and never below 10 kOhm, before buying a new actuator. Nobody documents P2DEB itself publicly. Symptoms: cylinder 2 misfire, rough idle.
- What you may notice
- Check engine light on
- Misfire felt at idle, cylinder 2 misfire count rising
- Reduced power at higher load
- Likely causes
- LikelyCylinder 2 solenoid in the lift actuator responding slowly or leaking internally
- LikelyAged, contaminated or wrong-grade engine oil in the hydraulic chamber
- PossibleAir in the high-pressure chamber after oil starvation or service
- RareDamaged driver stage in the engine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.