P037E — Glow Plug Sense Circuit Low

What Does P037E Mean?

P037E is a diagnostic trouble code indicating: Glow Plug Sense Circuit Low. This code relates to the ignition system system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P037E

⚠️ Check Engine Light (MIL) illuminated
⚠️ Glow Plug Sense reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Engine misfires or rough running

Common Causes

🔍 Open or broken wire in Glow Plug Sense circuit
🔍 Poor ground connection at Glow Plug Sense
🔍 Faulty Glow Plug Sense with no output signal
🔍 Disconnected or loose Glow Plug Sense connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P037E mean?

P037E indicates: Glow Plug Sense Circuit Low. The vehicle's computer has detected that the Glow Plug Sense is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P037E?

Only short distances if absolutely necessary. P037E affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P037E?

Repair costs for P037E typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Repair broken wire or restore ground in Glow Plug Sense circuit
🔧 Clean and secure Glow Plug Sense connector and ground points
🔧 Replace failed Glow Plug Sense

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P037E: Glow Plug Sense Circuit Low