What it means
The exhaust 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 exhaust camshaft actuator park-lock solenoid on bank 2 is controlled through an electrical circuit monitored by the engine control module. P25D5 sets when that circuit is detected above its expected voltage range, which can result from a supply short, a connection problem, or a control-module output fault.
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 check for related camshaft actuator codes to understand when the bank 2 circuit went high.
- Inspect the bank 2 solenoid connector and harness for corrosion, damaged insulation, or contact with a power-supply wire.
- Check terminals for corrosion or poor contact, and verify the connector is fully seated.
- Use the manufacturer's procedure to measure the circuit at the solenoid connector and check the control wire for a short to a power supply.
- If the harness and solenoid check out, test the control-module output according to the manufacturer's procedure for a driver stuck on.
Common fixes
- Repair damaged insulation or a control wire shorted to a power supply.
- Clean or repair corroded terminals at the bank 2 solenoid connector.
- Replace the park-lock solenoid if testing confirms it is faulty.
- Repair the control-module output only if testing confirms it is stuck on.
Can I keep driving?
If the engine runs normally and the warning light is steady, a gentle drive to a repair location may be possible; avoid hard acceleration. Stop if the engine stalls, runs very roughly, or loses substantial 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.