VIDEO

Informace

Ford

Ford P166

See the basic definition of a diagnostic error. This will help you to clarify the main causes of the fault code. You will understand the program of the control unit
Basic DTC analysis according to OBD2 protocol standard.

OBD2 or On-Board Diagnostics displays messages for basic group styles. More comprehensible code composition has been standard since 2000. The DTC code consists of five characters and its composition will be shown in this video

Insight into programming

The basic unit for the operation of any computer is the bit. Logic 0 and 1 are expressed by a single bit. Diagnostics The error code is composed of 16 bits. The first two bits define one of the four basic circuits. The video will show you a comprehensive overview of the composition of the error report

A diagnostically understandable description of the Diagnostic Trouble Code

Ford P166

Basic error definition

DRL Position On Front Light LED Unit Left-Component Internal Failure

Cause of DTC

The Daytime Running Lamps (DRLs) illuminate when the engine is running, the Parking Brake is released and the Headlamps are off or in the AUTO position. When the Body Control Module (BCM) receives a CAN Bus message from the PCM, indicating the engine is running, a hardwired input from the Headlamp Switch, indicating the Headlamp Switch is Off or in the AUTO position, and a CAN Bus message from the Anti-Lock Brake System (ABS) Module, indicating that the Parking Brake is released, the BCM will provide voltage to the DRLs through the Left and Right DRL Lamp Driver circuits.