What it means
Excessively high control voltage at the cam profile actuator (intake, profile A, bank 2). Same fault as P001C on bank 2. The cam phaser actuator adjusts intake/exhaust timing under load — a stuck or slow phaser kills mid-rpm torque and can throw correlation codes between cam and crank.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The bank 2 intake camshaft profile A actuator selects a cam-lift mode on engines with selectable lift profiles. The engine control module monitors its control circuit; this code sets when circuit voltage is higher than expected, often because the control wire contacts battery power or the ground return is open.
Common causes
Most likely first.
- Wiring shorted to battery voltage
- Connector pins corroded - high contact resistance
- Supply wire pinched against B+ source
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
How to diagnose it
- Save freeze-frame data and check live actuator commands and related codes to confirm when the bank 2 profile A circuit reads high.
- Inspect the bank 2 actuator connector and harness for damaged insulation, corrosion, loose terminals, or a wire pinched against a power source.
- Test for a short to battery voltage in the control wire and an open in the ground return using the manufacturer's circuit procedure.
- Check the actuator coil and connector terminals against the manufacturer's specification.
- If the wiring and actuator pass, test the module output using the manufacturer's diagnostic procedure.
Common fixes
- Repair the bank 2 control wire shorted to power.
- Restore the open ground return or repair its connection.
- Replace damaged or corroded actuator connector terminals.
- Replace the actuator or repair the module circuit only if testing confirms the fault there.
Can I keep driving?
Reduced power, rough running, or stalling may occur if the engine cannot select its intended cam-lift profile. Avoid hard acceleration if it runs poorly, and stop if it stalls.
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.