What it means
The intake camshaft actuator park-lock circuit on bank 2 is above the expected electrical threshold. This indicates a high circuit condition; the code alone does not identify its cause.
At a glance
- Usually lights the check-engine light
How it works
The bank 2 intake camshaft actuator park-lock circuit controls the solenoid used to hold that intake phaser in its parked position under specified conditions. P25CF means the control module detected a circuit level above its expected threshold; that high condition does not alone identify the failed part.
Common causes
Most likely first.
- Control wire shorted to a B+ supply
- ECU output driver stuck on
- Connector pins corroded - high contact resistance
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 related actuator codes, noting when the bank 2 intake circuit was reported high.
- Inspect the bank 2 intake park-lock connector and harness for damaged insulation, a wire contacting a power feed, corrosion, or loose terminals.
- Check the circuit's supply and control behavior against the vehicle wiring information and manufacturer's specifications.
- Isolate the circuit as specified and test the bank 2 intake control wire for a short to battery voltage.
- If the wiring and solenoid pass, use supported scan-tool data or tests to check whether the control-module output is stuck active.
Common fixes
- Repair damaged wiring that allows the bank 2 intake control circuit to contact a power feed.
- Clean, secure, or repair faulty terminals at the park-lock solenoid connector.
- Replace the solenoid if it fails the manufacturer's electrical test.
- Repair the control-module output only after the wiring and solenoid have been verified.
Can I keep driving?
If the engine runs normally, drive gently only as needed to arrange diagnosis and avoid hard acceleration. Stop in a safe place if it stalls, runs roughly, or loses power.
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.