Error Code P2091: What It Means & What To Do?

<<See All OBD Codes

The trouble code P2091 can be explained as B Camshaft Position Actuator Control Circuit High Bank 1. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

If the engine control module would detect a variation in the voltage coming from the B camshaft position actuator control circuit that is outside the parameters set by the automobile manufacturer, then it would store the P2091 error code. This would also give rise to the illumination of the check engine light.

What causes this problem with the B Camshaft Position Actuator Control Circuit High Bank 1?.

• There might be worn out timing belt or chain
• Defective camshaft variable timing solenoid
• Imperfect variable valve timing actuator
• There might be low engine oil level
• Broken fuse or fuse-able link
• Issue of misalignment of timing components
• The connector might not be functioning properly
• There can be distorted wiring
• Unusable ECU

1. Camshaft position actuator – The camshaft position actuator can turn out to be faulty or defective if the engine fails or hesitates to start. Fix it as soon as possible.
2. Crankshaft valves – Does the engine surge very often emitting black smoke? Then it’s high time to replace the crankshaft valves as they are defective.
3. Engine Control Module - If there is any corrosion or breaks in the internal wiring of the harness, then it can cause a short in the ECM or can also cause corrosion in the ECM through the wiring harness. You can always rely on us as we have the best auto parts for our customers.
4. Oil Pressure Gauge - The main function of the oil pressure gauge is to make sure that the lubricants reach the areas they need to, including the camshaft, main, and balance shaft bearings. Buy top notch oil pressure gauge from us at economical prices.
5. Powertrain Control Module - The onboard computer, or powertrain control module is the brain of the engine control system. Now if the brain is not working properly, then neither is the car engine. Get it replaced before the situation gets worse.
6. Oil control valve – The oil control valves can help you to save the usage of the valve. If you find the oil control valve to be broken or damaged, change it immediately.
7. Engine wiring connectors – Do you find the flashing or the blinking of the check engine light? Then the engine wiring connectors can be faulty. Replace it with a new engine wiring connector from Parts Avatar.
8. Electronic Control Unit - Is your car jump starting on reverse polarity? Or are you facing some intermittent starting issues? If yes, then it indicates that your electronic control unit is bad. So it is very important to replace the defective electronic control unit with us at equitable prices.
9. Diagnostic Tools - Buy quality diagnostic tools to check and diagnose OBD code P2091 error with the help of experienced mechanic. Visit us today! 

There could be countless symptoms that would accompany this fault code. Willing to know some common symptoms of OBD Trouble Code P2091? Your wish is our demand. Have a look at them below:

Common Symptoms

• Check engine light might come into signal
• Irregular engine idle
• Diminishing oil pressure
• Engine misfiring issue
• Bad engine performance
• Rise in the fuel consumption
• Visibility in the Change oil or service soon light 

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• It is essential to restore the flawed camshaft variable timing solenoid
• Repair or replace the quirky ECU
• You must clean the corrosion from connectors
• Make sure to mend the faulty filter
• Rehabilitate the defaults in the timing belt or chain
• The malfunctioning wiring should be repaired or replaced as per the need
• Carefully adjust the faults in the variable valve timing actuator
• Adjust the flawed blown fuse or fuse-able link

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of ECM, PCM, VVT, VCT, oil pressure sensor, timing belt, oil pressure switch, ecu car, pcm car, body control module components, timing chain and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2091 code to be stored:

Make sure to consult your vehicle information source for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. If you find the appropriate TSB, it may yield helpful diagnostic information. A diagnostic scanner and a digital volt/ohmmeter will be necessary to accurately diagnose a code P2091. A reliable source of vehicle information will also be needed.

After that the next step would be to inspect the level of the oil as well as its condition. The proper oil pressure would play a major role in the functioning of this circuit. After that all the components which are within the circuit should be located and then a visual inspection should be performed to inspect the related wiring for obvious faults like scraping, rubbing, bare wires, or burn spots. Then examine the connectors for security, corrosion and defective pins. This process must include all related sensors, constituents and the ECU.

The advanced steps become very vehicle specific and need the appropriate advanced equipment to perform in the right way. There would be a need of a digital multimeter and the specific technical references to carry out this procedure. Voltage requirements will vary depending upon the specific year, make and model of the vehicle.

The timing must be checked using the appropriate test equipment and the settings must be precise for the engine to operate correctly. An incorrect timing reading is an indication that essential timing components such as the belt, chain or gears may be worn or damaged. If this code is exhibited immediately after a timing belt or chain replacement, then you can suspect misalignment of timing components as the possible cause.

The camshaft and crankshaft sensors are generally supplied with a voltage reference of approximately 5-volts from the electronic control unit. If this process identifies the absence of a power source or ground, then there would be a need of continuity testing to check the integrity of the wiring, connectors as well as components. Make sure to perform the continuity tests with the power removed from the circuit and the normal readings for wiring and connections should be 0 ohms of resistance. Resistance or no continuity would indicate that the wiring might be opened or shorted and thus, it should be restored or repaired properly.

Common Mistakes When Diagnosing The P2091 Code

• Common mistakes while diagnosing this trouble code are unnecessary and expensive replacements which usually happens when one don’t follow all the steps carefully. In this code usually people replace ECU or sensors without even properly diagnosing it, when in reality the main problem is with the wrong timing alignment or insufficient oil pressure.
• The most common mistake while diagnosing this code is missing out on diagnosing steps which further leads to the expensive and unnecessary replacements. It is always recommended to seek the help of experienced diagnostician to avoid any mistakes.