P037E

Glow Plug Sense Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Difficulty starting the engine, especially in cold weather
Floating idle speed
Increased fuel consumption
Check engine light comes on

Causes

Open or short circuit in the glow plug circuit
Faulty glow plug relay
Wear or failure of glow plugs
Wiring Harness Problems
Malfunction of the engine control unit (ECU)

How to Fix

Check the continuity of the glow plug circuit using a multimeter
Check glow plug relay
Replace faulty glow plugs
Check and replace wiring harness if necessary
Check the operation of the computer

Related codes

P0380 P0381 P0670