P0380

What it means

The glow plug control module reports an electrical fault on circuit A — typically a single glow plug open-circuit, the relay failing, or wiring to the harness damaged. Diesel-specific; affects cold-start behaviour.

Is it safe to drive?

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

• One or more glow plugs open-circuit

  high

  One of the most commonly reported causes for this code — check this first.

• Glow plug relay failed

  medium

  A plausible cause — test and verify before replacing parts.

• Wiring/harness damage

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P0380 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?