contact_supportDiagnostic Trouble Code (DTC)

What is a Diagnostic Trouble Code

The engine control system in your car can - up to a certain point - diagnose problems that may be affecting your vehicle's emissions or engine performance. When some trouble is detected, the system returns a certain code, indicating the nature of the issue. The code returned is called a Diagnostic Trouble Code or DTC.

check_circleDTC Description

How is a DTC formed?

A DTC contains 5 digits, as shown below.

XXXXX

Each digit has a specific meaning.

  • P - Powertrain (Engine & Transmission)
  • B - Body (Includes A/C & Airbags)
  • C - Chassis (Includes ABS)
  • U - Network / Bus
  • 0 - Generic
  • 1 - Vehicle Specific
  • 1 - Fuel & Air metering
  • 2 - Fuel & Air metering (Injector circuit)
  • 3 - Ignition System or Misfire
  • 4 - Auxiliary Emission Controls
  • 5 - Vehicle Speed Control & Idle Control System
  • 6 - Computer Output Circuit
  • 7, 8, 9 - Transmission
  • A, B, C - Hybrid propulsion
  • Fault Description

Example

DTC: U0609 - That's a Network/Bus issue, generic in nature (not specific to this vehicle). It concerns the computer output circuit. Its classification is "09", which matches a specific error description that will most likely help you find out what's wrong with your vehicle.