VIDEO

Informace

Dodge

Dodge P0038

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

Dodge P0038

Basic error definition

O2-SENSOR 1 2 HEATER CIRCUIT HIGH

Cause of DTC

The primary objective of the Oxygen (O2) Sensor Heater Control is to attain the fastest possible temperature rise, and to control the steady state temperature of the O2 Sensor. A Positive Temperature Coefficient (PTC) element inside the O2 Sensor heats up as current passes through it. This allows the system to enter Closed Loop quickly and meet the OBD II requirements for continuous monitoring and to deliver accurate readings. This is accomplished by the Powertrain Control Module (PCM) sending a Pulse Width Modulated (PWM) current to the O2 Sensors heater element. The PWM duty cycle is calculated, in response to the temperature measurements. The PCM uses the collected information to continually adjust the PWM to achieve a desired steady state temperature target.