What Does the P0025 Code Mean and How Can You Fix It?

The `P0025` code indicates that the Engine Control Module (ECM) has detected an issue with the exhaust variable camshaft timing for bank 2, specifically that it's more retarded than what the ECM expects. To start troubleshooting, it's a good idea to clear the code and see if it returns. This can help determine if the issue is persistent or if it was a temporary glitch. Next, visually inspect the electrical connections and wiring for the camshaft sensor, Oil Control Valve, and crankshaft sensor. Look for any signs of damage or wear that could be causing the problem. It's also important to check the engine oil; make sure it's clean and of the correct viscosity, as this can affect the performance of the camshaft timing. If the code comes back, consider a few potential repairs. Changing the engine oil and filter to ensure you're using the proper oil viscosity can make a difference. Additionally, if you find any issues with the wiring or connections to the camshaft oil control valve, repairing or replacing them might be necessary. In some cases, you may need to replace the camshaft oil control valve for the bank 2 intake camshaft or even the camshaft phaser itself. If you're experiencing rough idling and poor gas mileage, it could be related to these issues. When you unplug the sensor and notice that the car runs fine, it suggests that the problem may be linked to the sensors or their wiring. Make sure to check the wiring on both sensors thoroughly. After clearing the fault code, take the vehicle for a drive to see if the code reappears. This can provide further insight into whether the issue is electrical or related to the sensors themselves.