OBD-II Generic Error Code P0673: Glow Plug 3 Cyl - How to Fix It

Q: Can I drive with error code P0673?

You may be able to drive, but the engine might be hard to start in cold weather and could run rough. It's best to fix it promptly to avoid starting issues.

Q: How much does it cost to fix P0673?

Parts cost: glow plug ($10-$40), relay ($20-$60). Labor if done by a shop: $100-$200. DIY is cheaper.

Q: What causes a glow plug to fail?

Common causes: normal wear, electrical faults, carbon buildup, or a faulty relay/module.

Q: Can I replace just one glow plug?

Yes, but it's often recommended to replace all glow plugs at once to ensure even performance, especially if others are old.

Q: Will disconnecting the battery reset P0673?

It may clear the code temporarily, but if the problem isn't fixed, the code will return.

Abstract

Error code P0673 indicates a fault with the glow plug for cylinder 3 in your diesel engine. Glow plugs help start the engine by heating the combustion chamber. This code often means the glow plug itself, its circuit, or the control module is faulty.