Engine-Codes - Ford - P1392 Ford

P1392 Ford Code - Glow Plug Circuit High Input Bank 1

- Code Popularity: 7,992 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P1392 Ford?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty glow plug relay
  • Faulty glow plug shunt
  • Faulty glow plugs
  • Glow plugs harness is open or shorted
  • Glow plugs circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

Code Tech Notes

California trucks it has a GPCM (Glow Plug Control Module) instead of a GPR (Glow Plug Relay).

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How to Fix the DTC P1392 Ford?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1392 Ford code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1392 Ford Code Mean?

The glow plug system is monitored when the glow plugs are commanded on for more than 35 seconds and battery voltage is between 11.5-14 volts.

P1392 Ford Code - Glow Plug Circuit High Input Bank 1

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