P037A
Glow Plug/Heater Indicator Control Circuit Low
P037A is an OBD-II diagnostic trouble code meaning: Glow Plug/Heater Indicator Control Circuit Low. Common causes: open or short circuit in wiring harness, glow plug indicator fault. Estimated repair cost: $56–167.
Symptoms
- Difficulty starting the engine, especially in cold weather
- Check Engine Light Is On
- Reduced engine efficiency
Causes
- Open or short circuit in wiring harness
- Glow plug indicator fault
- Problems with the engine control unit (ECU)
- Faulty glow plug relay
How to Fix
- Check the wiring harness for damage
- Check glow plug indicator
- Check glow plug relay
- Check engine control unit (ECU)
Related codes
Error P037A by Vehicle Brand
FAQ
What does the P037A code mean?
P037A is an OBD-II diagnostic trouble code that indicates: Glow Plug/Heater Indicator Control Circuit Low
What causes a P037A error code?
The most common causes of P037A include: Open or short circuit in wiring harness; Glow plug indicator fault; Problems with the engine control unit (ECU); Faulty glow plug relay.
How do I fix a P037A diagnostic trouble code?
To fix P037A: Check the wiring harness for damage. Check glow plug indicator. Check glow plug relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P037A?
Limited driving only, diagnose soon
How much does it cost to fix P037A?
The estimated repair cost for P037A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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