P0018 2012 Ford Fusion Code - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'

The common symptoms include engine misfires, rough idling, poor acceleration, and potentially stalling of the vehicle.

This code indicates that there is a timing issue between the crankshaft and camshaft in Bank 2 of the engine, specifically related to Sensor 'A'.

Possible causes include a faulty camshaft position sensor, a faulty crankshaft position sensor, timing chain issues, engine oil problems, or a malfunctioning Variable Valve Timing (VVT) system.

Diagnosis typically involves checking the camshaft and crankshaft sensors for proper operation, inspecting the timing chain for wear or slack, and ensuring that the engine oil is clean and at the correct level.

It is not recommended to drive the vehicle with this code present, as it can lead to more severe engine damage if the timing issue is not addressed promptly.

Repair options may include replacing the camshaft or crankshaft position sensors, repairing or replacing the timing chain, correcting engine oil issues, or addressing problems with the VVT system.

While clearing the code may temporarily turn off the check engine light, the issue causing the code will persist, and the code is likely to return once the vehicle is driven again.

The cost of repair can vary depending on the specific cause of the code, but it may range from a few hundred to over a thousand dollars, especially if extensive repairs are needed.

Depending on the skills and tools available, some DIY enthusiasts may be able to address simpler causes like sensor replacements. However, more complex issues like timing chain problems may require professional expertise.

While the frequency can vary, this code is relatively common in vehicles with timing chain or sensor issues, so it is not unheard of in a 2012 Ford Fusion.