The Autel MaxiCOM MK808 is a powerful diagnostic tool for car enthusiasts and professionals alike. One of its key features is the ability to read and interpret Diagnostic Trouble Codes (DTCs). Understanding the information presented when retrieving DTCs, specifically the status column, is crucial for accurate diagnosis and repair. This article focuses on deciphering the meaning of the status column within DTC information displayed on the Autel MaxiCOM MK808.
Decoding the Status Column of DTCs on the Autel MK808
The status column in the DTC display on the MK808 provides vital information about the current state of the fault code. It indicates whether the fault is active, pending, or previously stored. Different manufacturers may use slightly different terminology, but the general principles remain the same. Here’s a breakdown of the common status indicators:
Active DTCs
An “Active” DTC signifies a current fault that is presently affecting the vehicle’s system. The MK808 will likely illuminate the Check Engine Light (CEL) or other relevant warning lamps. This status indicates the problem is happening right now and requires immediate attention. For example, an active code related to a misfiring cylinder would likely result in noticeable engine performance issues.
Pending DTCs
A “Pending” DTC indicates a fault that has occurred but hasn’t been confirmed by the vehicle’s diagnostic system. The fault may have happened only once or intermittently. The CEL may not be illuminated with a pending code. Pending codes are essentially warnings that a potential problem might be developing. Addressing these codes early can prevent them from becoming active faults.
Stored or Previously Set DTCs
“Stored” or “Previously Set” DTCs represent faults that were detected in the past but are not currently present. The MK808 retains these historical codes, providing valuable insight into past issues. While the CEL might not be on for these codes, they can still be helpful in diagnosing intermittent problems or confirming the success of previous repairs. For instance, a stored code related to a loose gas cap can be ignored if the cap has been tightened and the issue hasn’t reappeared.
Why is the Status Column Important?
Understanding the status of a DTC is crucial for accurate diagnosis. It helps prioritize repairs by focusing on active faults first. Pending codes provide early warning signs, enabling preventative maintenance. Stored codes offer historical context for intermittent problems.
For example, if the MK808 shows an active code for a faulty oxygen sensor and a stored code for a low fuel level, the mechanic knows to prioritize the oxygen sensor issue as it’s the current problem affecting vehicle performance. The stored low fuel level code is likely irrelevant unless the fuel level is currently low as well.
Using the Status Column for Effective Troubleshooting
By utilizing the status column information, mechanics can streamline their diagnostic process:
- Prioritize Repairs: Focus on active codes first as they represent current issues.
- Preventative Maintenance: Investigate pending codes to prevent potential problems from becoming serious.
- Diagnose Intermittent Problems: Analyze stored codes to identify patterns or clues for recurring issues.
- Verify Repairs: Confirm the effectiveness of repairs by checking if previously active codes are now stored.
Conclusion
The status column in the DTC information on the Autel MaxiCOM MK808 is a vital element for accurate car diagnostics. Understanding the difference between active, pending, and stored codes allows for effective troubleshooting and informed repair decisions. By correctly interpreting the status column, users can maximize the capabilities of the MK808 and ensure efficient vehicle maintenance.
