P001DA Camshaft Profile Actuator A Control Circuit/Open Bank 2
- 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
- A camshaft profile actuator switches the intake camshaft (camshaft A) on bank 2 between two or more fixed cam profiles with different valve lift and duration, for example by shifting a cam piece axially or by locking rocker arms or tappets with oil pressure. Unlike a camshaft phaser it does not shift the timing continuously. The second letter "A" in the title numbers the actuator on this camshaft. This code is set when the control circuit of the actuator is open: no current flows when it is driven, because of a broken wire, an unplugged connector or an open coil. The engine usually stays on one profile, typically the base profile with low lift. Some manufacturers report these faults with their own codes instead. Bank 2 exists only on V and boxer engines.
- What you may notice
- Check engine light on
- Less power at high engine speed because the profile does not switch
- Higher consumption or uneven part-load running, depending on the profile
- Engine speed may be limited
- Likely causes
- LikelyConnector at the actuator corroded, oil-soaked or loose
- PossibleWire broken, e.g. at the valve cover
- PossibleActuator coil open
- RareOutput driver in the engine control module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.