P037D
Glow Plug Sense Circuit
The diagnostic feedback line that monitors glow plug current draw reports a general electrical fault — open, shorted, or out of plausibility. Used to verify each plug actually heats up.
The diagnostic feedback line that monitors glow plug current draw reports a general electrical fault — open, shorted, or out of plausibility. Used to verify each plug actually heats up.
Common causes
- high
Sense circuit failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-770
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P037D mean?
P037D means "Glow Plug Sense Circuit". It is a generic OBD-II code that points to a fault in the ignition system or misfire.
What are the most common causes of P037D?
sense circuit failed — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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