Volvo dtc: BREAKDOWN OF THE Volvo Diagnostic Trouble Code (DTC) IN OBDII
This is an insightful page describing the anatomy of the Volvo DTC (Diagnostic Trouble Code) in OBDII systems. Only in car models from 1996 and on.
A DTC is made up of 5 digits. The figure below demonstrates the composition of a Volvo DTC. With this information, it is easier to trouble shoot a Volvo DTC without knowing the description of the code.
Check the Volvo hidden menu for DTC (diagnostic trouble codes) in your car electronic modules. This will help you with troubleshooting fault before connecting to diagnostic interface like VIDA DICE.
The diagnostic connector units for OBD-I systems are small black rectangular boxes mounted in front of the left-side(driver-side in LHD countries) shock tower. Earlier cars have only one unit (“A”); later cars have two (“A” and “B”). Diagnostic connector “A” contains the test terminal probe (the wire mounted on the side of the box in the picture) used in both A and B along with the test button and the LED readout lamp. In diagnostic connector A, socket 1 is for the electronic transmission (if your 960 or 90-series car has the AW30/40), socket 2 for fuel injection or Motronic, socket 3 for ABS, socket 6 for ignition and socket 7 for the instrument cluster. If the 1992+ car is so equipped with connector B, socket 1 is for the climate control, socket 2 for cruise control, socket 5 for the SRS and socket 6 for the memory seats.
For later 1996+ OBD-II equipped cars, the diagnostic connector was changed to an electronic data link and moved from under the hood to in front of the shifter in the console. As a result, you need a computerized scan tool to do everything from checking for codes to resetting the maintenance light. Maintenance light resetting, by the way, was returned to a push-button method in the very late ’90s.
Also if your check engine indicator is on, you can quickly find out which module is causing this and is it safe to continue to travel.