P0380

Glow Plug/Heater Circuit A

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Difficulty starting the engine, especially in cold weather
Unstable operation at idle
Increased noise level during cold start
Increased white smoke emissions at startup
Check Engine Light Illuminates

Causes

Glow plug malfunction
Open or short circuit in the glow plug circuit
Faulty glow plug relay
Problems with the engine control unit (ECU)
Blown glow plug circuit fuse

How to Fix

Diagnostics of the glow plug circuit: checking the resistance of each plug and the integrity of the circuit
Checking the operation of the glow plug relay and fuses
Visual inspection of wiring for damage and corrosion
Replacing faulty glow plugs
Repair or replace damaged wiring
Resetting the error code and re-diagnosis

Related codes

P0381 P0382 P0383 P0384