P2CDCCold Start Cylinder 2 Deactivation/Intake Valve Control Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- With P2CDC the control unit reports that cylinder 2 did not take the valve state that the cold start routine asked for. Timing matters here: in a Ford patent on electrically latched rockers, intake deactivation is wanted at engine start, yet the cam of cylinder 2 sits on its lobe, so its latch pin cannot move at first. That is normal; the solenoid is pulsed again after roughly 200 to 280 crank degrees and only then must a current dip prove the pin moved. A missing dip with the cam on base circle points to a seized pin or a pumped-up lash adjuster. No maker documents P2CDC publicly; outside the cold start phase GM files the same failure on the L84 as P3499 and the generic code is P3410. The driver mainly notices a shaky warm-up.
- What you may notice
- Uneven idle while the engine warms up
- Warning lamp, sometimes with a cylinder 2 misfire code
- Engine control may suspend the cold start strategy
- Likely causes
- LikelyLatch pin on cylinder 2 seized by dirt or varnish in the oil
- PossibleHydraulic lash adjuster pumped up so the rocker stays loaded on base circle
- PossibleWeak cylinder 2 solenoid or high resistance in its connector
- RareWorn cam lobe or collapsed lifter on cylinder 2
- 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: €100 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.