Code result
P037A
Glow Plug/Heater Indicator Control Circuit Low
High severity
What it means
The driver circuit for the glow plug warning indicator (the dashboard glow lamp) is stuck low — short to ground or stuck-low driver.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Short to ground
highOne of the most commonly reported causes for this code — check this first.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Harness chafing through insulation
lowLess common, but worth ruling out after the more likely causes.
Related help
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