P2645 - OBD II Trouble Code

Our automotive experts have put together the following information about the P2645 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P2645 code.

OBD II Fault Code

• OBD II P2645

OBD-II Code Decreased engine performance is defined as a "A" Rocker Arm Actuator Control Circuit/Open

The Rocker Arm Control Solenoid supplies hydraulic pressure to the Variable Timing mechanism. This allows the Variable Timing System to adjust valve timing as needed. When the engine's control module (PCM) does not see the correct voltage signal back from the Rocker Arm Control Solenoid, the PCM will set code P2645.

Decreased engine performance Symptoms

• Decreased engine performance
• Increased fuel consumption

Common Problems That Trigger the P2645 Code

• Engine oil level is too low
• Powertrain Control Module (PCM) failure
• Rocker arm oil pressure solenoid failure
• Wiring issue