P138B - Glow Plug Module System Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

P138B Possible Causes

  • Faulty Glow Plug Control Module
  • Glow Plug Control Module harness is open or shorted
  • Glow Plug Control Module circuit poor electrical connection

First diagnose P138B code

    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 terminals.

Cost of diagnosing the P138B code

    Labor: 1.0

    The cost of diagnosing the P138B code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P138B Possible Symptoms

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

P138B Meaning

The Engine Control Module (ECM) monitors the Glow Plug Control Module. The ECM sets the OBDII code when Glow Plug Control Module is not working properly.
OBDII Code P138B - Glow Plug Module System Voltage - Engine-Codes.com

P138B More Information

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P138B Information for specific makes

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