VAG fault codes
Browse VAG fault codes with technical descriptions, common causes, symptoms, and recommended repair paths.
More than one
fault code at once?
When the car reports several faults simultaneously, it can be difficult to know where to start. Our intelligent analysis tool helps you see the big picture by correlating data from different control units.
- Identify common root causes
- See connections between seemingly different faults
- Prioritize the right actions directly
- Save time during troubleshooting
DTC ANATOMY
Every digit has a meaning
PREFIX
System group (P, C, B, U)
TYPE
0 = Standard, 1 = Manufacturer specific
SUBSYSTEM
Which circuit it involves
ID
Specific fault identification
ID
Specific fault identification
PREFIX
System group (P, C, B, U)
TYPE
0 = Standard, 1 = Manufacturer specific
SUBSYSTEM
Which circuit it involves
ID
Specific fault identification
Correct identification saves time
"Understanding the structure of a fault code is key to faster diagnostics. Here's how a standardized P-code is built."
FREQUENTLY ASKED QUESTIONS
Quick answers to technical questions