P001F
A Camshaft Profile Actuator A Control Circuit High Bank 2
Variable valve lift / cam control
Generic OBD-II
High
What it means
P001F means the engine computer detected high voltage in the control circuit for the 'A' camshaft profile (variable valve lift) actuator on bank 2. The actuator that switches the cam lift profile can't be controlled normally, so the engine runs in its default profile and loses some high-rpm power. It's an electrical circuit fault, not a timing or no-start problem.
High
Can I keep driving? Generally driveable — the engine runs in its default valve-lift mode, so you mainly lose top-end power. Fix it to restore full performance and economy.
Common symptoms
What you'll notice
- Check-engine light on
- Loss of high-rpm power or the high-lift cam mode
- Slightly rougher running under load
- Reduced fuel economy on some engines
Common causes
Most likely first
- Short to voltage in the actuator control wiringLikely
- Failed camshaft profile (valve-lift) actuator solenoidCommon
- Corroded or damaged connector at the actuatorCommon
- Failed ECM control driverLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the actuator connector and wiring for a short to power or chafing.
- Measure the solenoid's resistance against spec and replace it if out of range.
- Check the connector for corrosion or spread pins and repair as needed.
- Confirm the circuit isn't shorted to a voltage source elsewhere in the harness.
- If wiring and actuator are good, suspect the ECM driver. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P001F?+
Generally yes for gentle driving — the engine runs in its default valve-lift mode, so you mostly lose top-end power. Fix it to restore full performance and economy.
Can I just clear P001F?+
Clearing it is temporary; the high-voltage fault re-triggers the code once detected. Repair the circuit first.
Related codes
Often seen with P001F
Read & clear P001F yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX