P0384 - Glow Plug/Heater Indicator Circuit Range/Performance

The glow plug or heater indicator circuit is not operating within the expected range.

Code Overview

The glow plug or heater indicator circuit is not operating within the expected range.

Common Causes

• Indicator circuit fault
• Cluster problem
• Wiring or control issue

Diagnostic Steps

1. Verify indicator operation during key-on checks
2. Inspect circuit continuity and connector condition
3. Check for related heater-system faults

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.