What is OBD-II Code P0085 – Exhaust Valve Control Solenoid Circuit Low Bank 2
As a mechanic, I often encounter customers who come in with check engine lights on their cars. One common issue that some cars experience is OBD-II code P0085, which indicates a problem with the exhaust valve control solenoid circuit low bank 2. In this article, I will explain what this code means, what could be causing the problem, and how it can be repaired.
What is OBD-II Code P0085?
OBD-II code P0085 is a diagnostic trouble code that indicates a problem with the exhaust valve control solenoid circuit low bank 2. It is most commonly found in cars with V-shaped engines but can also be seen in other types of engines. The code tells the car’s onboard computer that the exhaust valve control solenoid circuit on the second bank of cylinders is not functioning correctly, causing a low voltage problem.
What Causes OBD-II Code P0085?
Several issues can result in the occurrence of the P0085 code. Here are some of the most common causes:
Faulty exhaust valve control solenoid – the exhaust valve control solenoid is responsible for controlling the exhaust valve. This component can become faulty over time or due to wear and tear. If the solenoid is defective, it will cause the low voltage problem, which will trigger the P0085 code.
Wiring problem – as with all electrical components in a car, faulty wires can cause problems. If the wiring on the exhaust valve control solenoid on bank 2 is damaged, it will prevent the component from working correctly, leading to a low voltage problem.
Poor oil temperature sensor circuit – the solenoid requires accurate monitoring of oil temperature to operate; if the oil temperature sensor circuit becomes defective, the solenoid will not work correctly. This issue will cause the P0085 code to appear on your car’s diagnostic system.
How to Fix OBD-II Code P0085
To fix OBD-II code P0085, you will need to find the problem’s root cause, which is usually one of the issues outlined above. Once you have established the cause of the code, you or a qualified mechanic can proceed with the following steps:
Replace a faulty exhaust valve control solenoid – if the exhaust valve control solenoid on bank 2 is defective, it will need to be replaced. This replacement process requires the expertise of a certified mechanic, as the solenoid is located in the engine compartment and is connected to various electrical systems.
Repair wiring problems – if wiring on the exhaust valve control solenoid on bank 2 is the cause of the problem, then it should be repaired or replaced. This task involves working with a handful of electrical components and can be a time-consuming process.
Replace poor oil temperature sensor circuit – if the oil temperature sensor circuit is the faulty component in your car, you will need to replace it. A qualified mechanic can help with this replacement because it involves removing and replacing many components in the engine compartment.
FAQs
1. Is it safe to drive with the P0085 code?
Suppose you notice that the P0085 code has resulted from a wiring issue. In that case, you may be able to drive the car for a short distance before the issue worsens. However, it is not recommended to keep driving the car with this code. If the problem persists, it could cause significant engine damage, leading to more costly repairs in the future.
2. How much does it cost to fix the P0085 code?
The cost of fixing the P0085 code can vary. The cost is dependent on the root cause of the code, the cost of parts needed for the repair, and the amount of labor needed to complete the work. The price could range from $100 to 2000 dollars.
3. What happens if I ignore the P0085 code?
Ignoring the P0085 code could lead to further engine damage. The low voltage problem could cause the engine to start malfunctioning, which could cause a chain reaction leading to more significant engine damage or even engine failure altogether.
4. Can I fix the P0085 code myself?
Attempting to fix the P0085 code on your own is not recommended. Working with the exhaust valve control solenoid and electrical systems requires training and specialized skills. A mistake in repairs could lead to more significant issues or further damage to the engine’s different components.
5. How can I prevent the P0085 code?
Preventing the P0085 code is possible if you follow routine car maintenance. Regularly check your car’s electrical systems and wiring, replace worn-out components, and keep up with oil changes. Adequate car maintenance ensures that your car run’s smoothly and helps avoid the occurrence of the P0085 code.
Conclusion
The P0085 code is a common problem in cars with V-shaped engines, resulting from a low voltage issue, usually caused by a faulty exhaust valve control solenoid, wiring problems, or poor oil temperature sensor circuit. If the issue persists, it could lead to significant engine damage or engine failure altogether. To avoid such costly repair services, it is advisable to seek the help of a certified mechanic when faced with this code. By repairing or replacing the faulty components, you can help your car run smoothly and avoid further problems.