Glow Plug Circuit Low Input Bank 2
Table of contents
P1393 Possible 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)
How do I fix code P1393?
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’s pins.
Cost of diagnosing the P1393 code
The cost of diagnosing the P1393 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1393 Description
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.