P2658 OBD Error Code: Problem & Solutions

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Error code P2658 popping up again and again? Don’t know how to crack the error code? Don’t you worry, Parts Avatar has assembled all the information for you! The OBD-II code decreased engine performance is also known as a "A" rocker arm actuator system performance/stuck off. Modern day vehicles utilize the variable valve technology to allow for greater airflow through the engine at higher RPMs. This further promotes a better performance over a wider range.

These days automakers are preferring a variable valve lift system that permits the valve to open wider. Inside the variable lift rocker arm assembly, one can locate the position sensors that aid the engine computer (PCM) in regulating the operations of the assembly. The code P2658 is stored as soon as the solenoid inside the assembly malfunctions.

What causes this problem with the Rocker Arm Actuator Control Circuit Low Bank 2?

• Wrong type of engine oil
• Fault in the ‘A’ rocker arm actuator
• Decreased or increased engine oil
• Open or short circuited harness in the 'A' rocker arm actuator
• Deficient electrical connection running in the ‘A’ rocker arm actuator circuit

1. Engine Oil - Hearing weird engine noises? Increased mileage? Yes, all this likely caused due to bad engine oil present in the system. Restore it instantly before it further increases the problems.
2. Rocker Arm - Having problems with the rocker arm? It can lead to problems hindering the overall functions of the exhaust. Don’t know where to look for? No worries, Parts Avatar has it all. A faulty rocker arm could end up being the root cause behind the error code P2658.
3. Rocker Arm Position Sensor - Jammed or defective rocker arm position sensor can harm the overall performance of the engine along with an error code P2658. Tune into Parts Avatar for top notch rocker arm position sensor offered as economical prices.
4. Powertrain Control Module - Fearing an error code P2658? A malfunctioning powertrain control module is likely to invite issues like a poorly running engine, increase in carbon emission, choking, stuttering and stalling of the engine. Well, to avoid these, we recommend a replacement or repair of the powertrain control module before it worsens the condition of the system.
5. Rocker Arm Solenoid - A faulty rocker arm solenoid can cause an array of problems including rough engine performance and surging/bucking. We advise you to get your rocker arm solenoid changed immediately if you want to overcome the problems caused by the error code P2658.

Next important thing you need to know about are the common symptoms for this obd error code P2658 with your fuel volume control:

Common Symptoms

• Decrease in the engine performance
• Increase in the fuel consumption

Wish to correct this error code with your vehicle? Do you know what all you should do to make your car free from this code? Well, don’t worry! We are here to guide you:

• Make sure you inspect the engine oil type and pressure levels present. Changes should be made according to the requirements
• A malfunctioning 'A' rocker arm actuator should be repaired or replaced immediately
• All the corroded or open harness in the 'A' rocker arm actuator should be mended or restored
• Amendments should be performed to fix a weak electrical connection running in the 'A' rocker arm actuator

If you need any parts to fix this problem you can easily find them with us. Not only that we also have in stock the best in range auto parts and that too at the most budget friendly prices ever online. Whether you need a engine control module, rocker arm, valve, engine, powertrain control module, wiring, you can simply rely on us for quality auto parts.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

The crankshaft and camshaft positions installed are regulated making use of the electromagnetic sensors. To offer signal interruption of the electromagnetic field, these sensors use the relief holes that can be found in the camshaft and crankshaft drive gears. The interruptions in the electromagnetic field are seen as the square waveform patterns that represent the variating degrees of voltage by the PCM. Making use of the electromagnetic resistance in the 5-volt circuit, these changes in voltage are created. In order to supply separate data streams to the PCM, a number of manufacturers use multiple crankshaft sensors. These streams offer input for engine ignition and fuel injection timing. A camshaft sensor for every single camshaft is utilized by the engines that are equipped with multiple camshafts. To break the electromagnetic field, manufacturers use the notches cut into shafts or nodules that are permanently attached. Depending upon sensor placement, these notches or nodules are located near the rear or middle of the shaft. The automaker at times also fixes the crankshaft sensor on top of the transmission bell-housing and records crankshaft position from interrupter holes in the flex plate. An accurate diagnosis can only begin when the all engine timing indicators are properly aligned.

Using the manufacturer’ scheme, make sure that the timing marks are aligned along with the test belt or chain deflection. If timing parts are functioning in order, the VVT or VCT solenoids and circuitry should be tested and checked. In rare cases, there may be a PCM and sensor failure. Also, electrical wiring and connectors are likely to fail even before the sensors specially near oil or other corrosive fluids. Numerous tools prove to be instrumental in successfully diagnosing this code. All that is required for a precise diagnosis is a suitable OBD-II scanner (or code reader), a digital volt/ohmmeter, and an oscilloscope along with a manufacturer's service manual (or the equivalent). All the wirings and connectors should be inspected visually. All the damaged, loose or corroded ones should be repaired or replaced. Then the system should be rechecked and retested to ensure success. Connect the scanner (or code reader) to the diagnostic connector to register all stored codes and freeze frame data, if in case the system wiring, connectors and components (Including fuses) are in normal working order. This information should be registered as it can be extremely helpful in diagnosing intermittent conditions that may have contributed to this code. Then again clear the codes and test to the vehicle to see if it returns. This helps in determining if the code is intermittent or not. Now, that the codes are cleared, test drive the vehicle to see if the code returns. If in case, the code doesn’t immediately return, you may have an intermittent condition. These intermittent conditions often prove to be quite challenging to diagnose and in extreme cases may have to be allowed to worsen before an accurate diagnosis can be performed. Now that you have disconnected the connector from the affected sensor, a ground at the connector end (key on/engine off) along with a reference voltage signal (usually 5-volts) should be checked. Deattach the connector from the PCM and test all circuits for resistance and continuity if the reference voltage and/or ground are not identified. It is advised to consult the manufacturer's service manual for wiring diagrams, technical service bulletins, and/or flow charts. Clear the codes and perform a test drive, after the repairs have been performed. You should reconnect the sensor and use the oscilloscope to regulate live data waveform patterns, if reference voltage and ground signals are present.

Replace the sensor if required after monitoring the abnormalities in the waveform. Again clear the codes and perform a test drive to ensure success. A damaged PCM should be blamed if the wave for patterns appear to be normal. It should be noted that a failure in the PCM is rare and replacement will require a reprogramming. Large number of applications require camshaft and crankshaft sensor replacement in sets. Refer to your service manual for specific instructions.

Common Mistakes When Diagnosing the P2658 Code

• Here we have listed a few common mistakes that should be avoided while performing the diagnosis:
• Wiring errors
• A fault in the variable valve lift controller assembly