P2653 OBD-II Trouble Code: B Rocker Arm Actuator Control Circuit Low Bank1

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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 for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P2653 code definition

The P2653 trouble code detects an open or shorted circuit in the B rocker arm actuator control circuit in bank 1.

What the P2653 code means

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.

What causes the P2653 code?

The P2653 code can be triggered by a number of different things:

  • Broken oil control valve
  • Oil pressure is low
  • Oil level is low
  • Open circuit near the oil control valve
  • In very rare cases, a malfunctioning PCM
  • In very rare cases, faulty electromagnetic sensors

What are the symptoms of the P2653 code?

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.

How does a mechanic diagnose the P2653 code?

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.

Common mistakes when diagnosing the P2653 code

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.

How serious is the P2653 code?

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.

What repairs can fix the P2653 code?

The standard fixes for the P2653 code include:

  • Adding more oil
  • Increasing the oil pressure
  • Replacing the oil control valve
  • Replacing the oil control valve circuit

In uncommon cases, the PCM or electromagnetic sensors may need to be replaced.

Additional comments for consideration regarding the P2653 code

While inspecting the oil control valve, a mechanic should always check for loose wires or damaged electrical connectors.

Need help with a P2653 code?

YourMechanic offers certified mobile mechanics who will come to your h ome or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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