P037B
Generic code
Free on OBD DashX
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What P037B means
- Glow Plug/Heater Indicator Control Circuit High
Possible symptoms
- Check and replace any faulty glow plugs or heater indicators.
- Inspect and repair any damaged or loose wiring within the glow plug or heater indicator circuit.
- Verify and replace any defective glow plug or heater indicator control module.
- Ensure the glow plug relay is functioning properly and replace if necessary.
- Consult the car or motorcycle's manufacturer service manual for further troubleshooting and diagnostic steps.
Possible causes
- Faulty glow plug or heater indicator control module
- Loose or corroded electrical connections in the glow plug or heater indicator circuit
- Short circuit or open circuit in the glow plug or heater indicator wiring
- Malfunctioning engine coolant temperature sensor
- Faulty powertrain control module (PCM)
Possible solutions
- Glow plug/heater indicator light stays on constantly
- Glow plug/heater takes longer than usual to warm up
- Engine misfires or has difficulty starting
- Reduced engine power or decreased performance
- Increased fuel consumption
Free on OBD DashX
P037B on OBD DashX
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