OBD-II Generic Error Code P0086: How to Fix It

Q: What does error code P0086 mean?

P0086 indicates a high voltage condition in the exhaust valve control solenoid circuit for bank 2. This means the ECM detected a voltage signal above the expected range, often due to a short circuit or faulty solenoid.

Q: Can I drive with a P0086 code?

You can drive short distances, but you may notice reduced engine performance, poor fuel economy, or a check engine light. Prolonged driving could cause damage to the exhaust valve system or catalytic converter.

Q: Is P0086 serious?

Yes, it is moderately serious. It can affect engine performance and emissions. Ignoring it may lead to further damage or failed emissions tests.

Q: How much does it cost to fix P0086?

If the solenoid needs replacement, parts cost $50–$150, labor $100–$200. If it's a wiring issue, repair could be $50–$300. ECM replacement can cost $500–$1000.

Q: What is bank 2 on an engine?

Bank 2 is the side of the engine opposite cylinder #1. On inline engines, it's usually bank 1 only; on V6/V8 engines, bank 2 is the passenger side on left-hand drive vehicles.

Abstract

Error code P0086 means the engine control module (ECM) has detected a high voltage or short circuit in the exhaust valve control solenoid circuit for bank 2. This often indicates a wiring issue, a faulty solenoid, or an ECM problem. Driving with this code may cause reduced performance and increased emissions, so address it promptly.