What it means
The drive circuit for cam profile actuator A in position C on bank 1 is open. Three-stage cam profile systems use a separate control valve per profile position.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The Bank 1 camshaft profile actuator A has a separate control circuit for position C, which operates the mechanism that selects that cam profile. This code sets when the module detects an open in the position C drive circuit, so the actuator may not receive the command to engage.
Common causes
Most likely first.
- Solenoid winding open
- Pin pushed back out of connector body
- Cracked solder joint inside the module or sensor
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
How to diagnose it
- Use freeze-frame data and actuator command data to confirm the fault occurs when Bank 1 actuator A position C is requested.
- Inspect the position C solenoid connector for a backed-out pin, corrosion, damage, or a loose fit.
- Check the solenoid winding and its circuit for an open, following the manufacturer's specification and wiring diagram.
- With the circuit isolated as specified by the manufacturer, check continuity through the harness from the position C solenoid to its control module.
- If the solenoid and external wiring are intact, inspect the relevant module or sensor assembly for an internal cracked connection before replacing it.
Common fixes
- Seat or replace the backed-out or damaged position C connector terminal.
- Repair an open or broken wire in the Bank 1 actuator position C circuit.
- Replace the position C solenoid if its winding is confirmed open.
- Repair or replace the module or sensor assembly if an internal cracked connection is confirmed.
Can I keep driving?
A short, gentle drive may be possible if the engine remains stable, but expect reduced power because Bank 1 may not select profile C. Stop if the engine stalls or runs very roughly.
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.