Skip the auto shop - Our mechanics make house calls

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

check engine light

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...


Related questions

Q: 1999 Nissan Altima won't stay running. I changed the thermostat.

First of all, it isn't possible to tell you exactly what is wrong with your car without direct testing, in other words, diagnosing it. If the thermostat made the car run at the proper temperature, then that is not likely...

Q: Engine reduce power and light goes off but not other warning lights

Hello, thank you for writing in. When you have any type of warning light it means the computer has detected an issues when it was running tests. The computer is constantly running tests, and even stores some of their codes...

Q: Hello, my car has no spark, no controlled ground for the fuel pump, and no injector pulse. Fuse link close to the battery and relays are good.

Hello and thank you for contacting YourMechanic. The ECU is under your passenger's side seat. You can gain access to it by simply sliding the seat all the way forward and removing the plastic cover from the ECU. You can...