OBD-II Generic Error Code P0675: How to Fix It

Q: Can I drive with error code P0675?

You can drive short distances, but it may cause hard starting, rough idle, and increased emissions. It's best to replace the faulty glow plug soon to avoid potential engine damage or difficulty starting in cold weather.

Q: Is P0675 only for cylinder 5?

Yes, P0675 specifically refers to the glow plug circuit for cylinder 5. Related codes P0671-P0674 and P0676-P0678 correspond to other cylinders.

Q: What causes glow plug failure?

Common causes include age/wear, carbon buildup, short circuits, corrosion, or a faulty glow plug relay. Diesel engines with high mileage often require glow plug replacement.

Q: How much does it cost to fix P0675?

If you DIY, a glow plug costs $10-$30. If a shop does it, parts and labor typically range from $100-$300 depending on the vehicle.

Q: Can a bad glow plug damage my engine?

Yes, if a glow plug tip breaks off inside the cylinder, it can cause catastrophic engine damage. Also, running with multiple failed glow plugs can cause incomplete combustion and cylinder washdown.

Abstract

Error code P0675 indicates a problem with the glow plug in cylinder 5, typically in diesel engines. Glow plugs preheat the combustion chamber to aid cold starting; a faulty plug can cause hard starting, misfires, or increased emissions.