The P0085: Exhaust Valve Control Solenoid Circuit Low (Bank 2) refers to an issue with the exhaust valve control solenoid circuit on Bank 2, where the circuit is experiencing a lower-than-expected voltage. This problem can be caused by a faulty exhaust valve control solenoid, low voltage in the circuit, wiring issues such as shorts or opens, or a malfunctioning Powertrain Control Module (PCM). In simple terms, when this code appears, it indicates that the solenoid responsible for controlling the exhaust valves on one side of the engine is not operating correctly due to an electrical issue.
P0085 – Quick Overview
| Meaning | P0085: Exhaust Valve Control Solenoid Circuit Low (Bank 2) |
| Is it serious? | Yes, this code can be serious as it affects the exhaust valve timing, potentially leading to poor engine performance and increased emissions. |
| Possible causes | – Faulty exhaust valve control solenoid – Low voltage in the solenoid circuit – Wiring issues such as shorts or opens – Faulty PCM |
| How to diagnose? | – Measure the voltage in the exhaust valve control solenoid circuit. – Inspect the solenoid and wiring for damage. – Test the solenoid’s operation with a multimeter. – Replace or repair the solenoid or PCM as needed. |
P0085 Meaning
The P0085: Exhaust Valve Control Solenoid Circuit Low (Bank 2) code indicates that there is an electrical issue in the exhaust valve control solenoid circuit for Bank 2 of the engine. This could result from a malfunctioning solenoid, insufficient voltage in the circuit, or wiring and connection issues. When the exhaust valve control system isn’t working properly, it can lead to timing problems, affecting the engine’s performance and emission control.
Step-by-step diagnostic guide
Follow the outline procedure to diagnose this DTC by eliminating possible causes one by one.
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check if there are any other related codes present. These might provide additional clues about the problem. | OBD-II Scanner |
| Measure Voltage in the Exhaust Valve Control Solenoid Circuit | Measure the voltage in the exhaust valve control solenoid circuit to ensure it is within the expected range. | Multimeter, Manufacturer’s Specifications |
| Inspect the Solenoid and Wiring | Inspect the exhaust valve control solenoid and its associated wiring for any signs of damage, shorts, opens, or corrosion. | Flashlight, Multimeter |
| Test the Solenoid’s Operation | Test the exhaust valve control solenoid on Bank 2 for proper operation using a multimeter, ensuring it meets the manufacturer’s specifications. | Multimeter, Manufacturer’s Specifications |
| Repair or Replace Faulty Components | If any components, wiring, or the solenoid are found to be faulty, repair or replace them as necessary. If the PCM is faulty, consider replacing it. | Wire Strippers, Electrical Tape, Replacement Wires/Connectors, Replacement Solenoid or PCM |
| Clear the Code and Test Drive | After completing the necessary repairs, clear the P0085 code using the OBD-II scanner. Take the vehicle for a test drive to ensure the issue is resolved and the code does not return. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P0085 code has not reappeared. If the code returns, further diagnosis may be required. | OBD-II Scanner |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko