P037B

2017-10-10

Description:

  • 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)

Related Parts:

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

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