P0383

Glow Plug Control Module 1 Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–111 (est.)

Symptoms

Difficulty starting the engine (especially in cold weather)
Floating idle speed
Reduced engine power
Check Engine Light

Causes

Malfunction of the glow plug control module
Open or short circuit in wiring
Bad contacts in connectors
Faulty glow plugs
Module power problems

How to Fix

Check the voltage in the glow plug module control circuit
Check the condition of the glow plugs
Inspect connectors and wires for damage
Check fuses and relays
Replace the glow plug control module (if necessary)

Related codes

P0380 P0381 P0382 P0384