What it means
The variable intake valve lift on cylinder 2 does not reach the commanded position within tolerance. Mechanism wear or actuator force degraded.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
- The engine or gearbox may go into limp mode
How it works
The variable intake valve lift mechanism adjusts the opening of the intake valve on cylinder 2, and the control module monitors its position against the commanded lift. This range/performance code sets when cylinder 2's mechanism cannot reach that target within the allowed tolerance.
Common causes
Most likely first.
- Variable lift mechanism worn
- Oil pressure to actuator low
- Sensor element aged beyond calibration window
Symptoms
- Check-engine light
- Rough idle or misfire
- Reduced power or acceleration
- Poor fuel economy
How to diagnose it
- Record freeze-frame data and check cylinder 2 misfire counts alongside live commanded and actual intake-lift values.
- Check engine oil level and condition first, because low oil supply can keep the cylinder 2 lift actuator from moving the mechanism correctly.
- Inspect the cylinder 2 actuator and position-sensor connectors and wiring for damage, corrosion, or loose contact.
- Command cylinder 2 lift changes with the manufacturer's scan-tool procedure and see whether its reported position follows the command.
- If wiring and sensor response are sound, check oil supply to the actuator and inspect the cylinder 2 mechanism for wear or binding.
Common fixes
- Correct the oil level or oil condition using the specified service procedure.
- Repair damaged wiring or poor connections at the cylinder 2 lift actuator or position sensor.
- Replace the cylinder 2 position sensor if it fails the manufacturer's test.
- Repair or replace the cylinder 2 lift actuator or mechanism if testing confirms weak actuation, wear, or binding.
Can I keep driving?
Keep trips short and drive gently while the cylinder 2 lift fault is assessed; acceleration and fuel economy may suffer. Stop if the check-engine light flashes or severe rough running develops to reduce the risk of catalytic-converter damage.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.