P2659 OBD-II Trouble Code: A Rocker Arm Actuator Ctrl Circuit High Bank2

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Cost of diagnosing the P2659 code

P2659 is a diagnostic trouble code (DTC) for "A Rocker Arm Actuator Ctrl Circuit High Bank2". 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 $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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P2659 code definition

A P2659 trouble code means that the Powertrain Control Module (PCM) has detected a short in the rocker arm actuator control circuit. More specifically, this trouble code signifies that the problem happened in the intake camshaft in engine bank 2, which the mechanic can find on the intake side of the cylinder head in engine bank 2 or the bank where the number one cylinder is not located. In addition to a P2659 trouble, a mechanic can also find the following related codes, including P2655, P2656, P2567, and P2568.

What the P2659 code means

When a P2659 trouble code is stored, the PCM has detected an abnormal voltage reading from the rocker arm actuator control circuit that varies by more than 10 percent than a level recommended by the manufacturer. This, in turn, causes the storage of the code on the PCM and the illumination of the Check Engine light.

What causes the P2659 code?

Some common causes of a P2659 trouble code include low oil level or low oil pressure, a malfunctioning oil control valve, a short in an electric circuit or connector associated with the oil control valve, and a bad PCM.

What are the symptoms of the P2659 code?

Rough idling, reduced engine performance, and hesitation while accelerating are common symptoms of a P2659 trouble code.

How does a mechanic diagnose the P2659 code?

To diagnose a P2659 trouble code, a mechanic needs a manufacturer's service manual, advanced scan tool, and a digital volt/ohmmeter. The mechanic should complete the following steps when diagnosing this code:

  • Begin by making sure the vehicle timing is adjusted correctly, and then checking the deflection of the timing chain or belt to make sure they meet manufacturer specifications.
  • The mechanic should also test any circuitry and solenoids associated with the Variable Valve Timing (VVT).
  • Inspect all wiring and connectors for damage and to make sure they are connected properly.
  • Download any stored codes or freeze frame data from the PCM.
  • Test all PCM circuits for proper resistance and continuity using the digital volt/ohmmeter.
  • If all reference voltage and ground signals are present, use an oscilloscope to observe the data waveform patterns, looking for abnormalities.
  • Clear the trouble code and test the system to see if the code comes back.

Common mistakes when diagnosing the P2659 code

A common mistake made by mechanics diagnosing a P2659 trouble code is to replace engine components when the problem actually lies with a low oil level, pressure, or viscosity.

How serious is the P2659 code?

When driving that is subject to a P2659 trouble code, vehicle owners can expect to experience trouble accelerating, a reduction in engine performance, and a rough idle.

What repairs can fix the P2659 code?

Fixing a P2659 trouble code requires the mechanic to perform specific repairs when parts are deemed faulty when diagnosed, including:

  • Replacing the timing belt or chain if worn and unable to keep proper vehicle timing.
  • Adjusting the timing of the old belt or chain, or the new timing component if replaced.
  • Repairing and replacing any damaged wiring, connectors, or components upon inspection.
  • Replacing any faulty sensors detected when using the oscilloscope.
  • Replacing and reprograming the PCM if it's not working properly.

Need help with a P2659 code?

YourMechanic offers certified mobile mechanics who will come to your home 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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P2659

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