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P2653 is a diagnostic trouble code (DTC) for "B Rocker Arm Actuator Control Circuit Low Bank1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P2653 trouble code detects an open or shorted circuit in the B rocker arm actuator control circuit in bank 1.
The P2653 code is a standard OBD-II trouble code for the rocker arm actuator control circuit for the exhaust camshaft (called the B) in a specific engine bank (bank 1, which is the engine bank containing the number 1 cylinder). This control circuit is responsible for sending voltage readings to the powertrain control module (PCM), which determines fuel injection and ignition timing. When the voltage reading deviates by 10 percent or more from the expected value, the P2653 code will be triggered.
The P2653 code can be triggered by a number of different things:
The P2653 trouble code will usually result in the Check Engine soon Warning Light illuminating on the control panel. The vehicle may also have a difficult time idling, and may have rough and inconsistent acceleration. The all-around performance of the engine may also suffer.
The P2653 trouble should be diagnosed using a standard OBD-II trouble code scanner. A reputable technician will look at the freeze frame data to gain information about the code, and to look for any additional trouble codes that are present. After assessing the freeze frame data, the technician will reset the trouble codes, restart the vehicle, and take it for a short test drive. If the P2653 trouble code does not return, then the code was likely detected erroneously.
If the P2653 trouble code returns, the mechanic will check the oil level and pressure, and will also look to see if the engine timing indicators are aligned as they should be. If the indicators and oil are normal, the mechanic will check the oil control valve, and the valve circuit. If none of these inspections lead to issues, the electromagnetic sensors and PCM should be inspected.
After the issue has been repaired or resolved, the trouble codes will be reset.
The most common mistake when diagnosing the P2653 code comes from not following the basic OBD-II trouble code diagnosis protocol. The trouble code diagnosis protocol should always be adhered to, in order. Failure to do so can result in an oil control valve being replaced when the only issue was low oil pressure or levels.
A vehicle with a detected P2653 code will still be drivable, barring the presence of other trouble codes. However, the vehicle will likely experience some engine issues, and failure to address the P2653 code can ultimately result in serious engine damage.
The standard fixes for the P2653 code include:
In uncommon cases, the PCM or electromagnetic sensors may need to be replaced.
While inspecting the oil control valve, a mechanic should always check for loose wires or damaged electrical connectors.
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