Glow Plug Control Module System Voltage
Ford · ignition
Data confidence62%
The control module detected a fault associated with the Glow Plug Control Module System Voltage circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
38B
Specific fault index within the subsystem.
Frequently asked questions about P138B
What does P138B mean?
Glow Plug Control Module System Voltage. The control module detected a fault associated with the Glow Plug Control Module System Voltage circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.
Is P138B generic or manufacturer-specific?
P138B is a manufacturer-specific code. In this database it is documented for: Ford. The same number can mean something different on other brands.
Can TuningBot remove P138B at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.