VIDEO

Informace

GMC

GMC C0267

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

GMC C0267

Basic error definition

Post Catalyst Fuel Trim System Too Rich (Bank 1)

Cause of DTC

Engine started, battery voltage must be at least 11.5v, all electrical components must be off, the ground between the engine and the chassis must be well connected, the exhaust system must be properly sealed between the catalytic converter and the cylinder head, and the oxygen sensor heater for oxygen sensor before the catalytic converter must be properly functioning. The DME detected a problem with the fuel mixture. Trim control 1 segment (precision controller with oxygen sensor behind cat. ) below delta lambda threshold of less than -1.56. Coolant temperature greater than 45 degrees Celsius. O2 heaters ready, fuel system in a closed loop, but the rear O2 sensor is in voltage outside the parameters. Note: For resistance testing of sensor heating, oxygen sensor should be cooled to ambient temperature. High temperatures at oxygen sensor may lead to inaccurate measurements.