OBD-II Generic Error Code P0079: How to Fix It

Q: Can I drive with error code P0079?

Yes, but it's not recommended. The exhaust valve control may affect engine performance and fuel economy. Prolonged driving could cause further damage.

Q: What does 'bank 1' mean?

Bank 1 refers to the side of the engine containing cylinder 1. In inline engines, it's the whole engine. In V-engines, it's the cylinder bank that includes cylinder 1.

Q: How much does it cost to fix P0079?

The cost varies. A solenoid replacement typically costs $100-$300 including parts and labor. Wiring repairs may cost less. DIY can save labor costs.

Q: Can a bad battery cause P0079?

A low battery voltage can sometimes trigger this code, but it's rare. More likely a wiring or solenoid issue.

Q: Do I need a code reader to diagnose P0079?

Yes, an OBD2 scanner is needed to read and clear the code. Basic scanners are affordable and widely available.

Abstract

Error code P0079 means your car's computer detected a low voltage condition in the exhaust valve control solenoid circuit for bank 1. This solenoid controls engine valves to optimize performance. The issue is often a faulty solenoid, wiring problem, or a bad engine control module. Here's how to diagnose and fix it.