The P0022 fault code, applicable to all car manufacturers, means “A Camshaft Position – Timing Over-Retarded (Bank 2)”.
Background Information: The camshaft controls the opening and closing of the valves. In a variable valve timing system, the electronic camshaft adjusting valve (or oil control valve, OCV) adjusts the camshaft angle by changing the oil pressure to the camshaft adjuster (mechanical) according to instructions from the engine control module (ECM), ensuring the valves open and close at the optimal time. Causes of the P0022 fault include incorrect timing of the intake/left/front camshaft, mechanical jamming of the camshaft due to over-timing, or the actuator valve being stuck in the open position. In short, it’s over-timing. “A” camshaft must be the “intake,” “left,” or “front” camshaft. Determine left/right and front/rear from the driver’s position looking forward. The first group refers to the group including cylinder 1, and the second group is the group opposite the first.
Tip: To quickly find fault codes, you can use a professional OBD2 car scanner. This will help you pinpoint the problem. This data can help you understand the performance of various vehicle components and troubleshoot before the problem worsens.