Volvo OBD-II trouble code help.
We in the 850 family who have 1996 and 1997 model years have it easy. Check Engine light comes on? We just plug in our code readers and a magical system called OBD-II tells us what code(s) are causing the CE light. Same with 1998 model year Volvos, like S70, V70 and XC70 models. Then after that, codes expanded from the OBD-II to include Volvo-specific codes that OBD-II readers cannot retrieve, although many overlap in meaning.
Read Codes On A 1999+ Volvo?
Guess what? OBD-II readers will read the OBD-II codes these cars set. The OBD-II port is physically the same. I used my reader on my ex’s 2004 V70R — lower driver’s side interior, near your left knee — and it correctly reported OBD-II codes. Here is the specific 1999+ Volvo DTC code page for “the rest of the story”.
How To Read Codes
To start, the Ignition key must be in position II, engine not running. Open the hood. Locate the two diagnostic sockets just inboard of the washer fill cap. The “A” connector (shown above) has a jumper that is stored in the lid of the “A” diagnostic connector. The jumper is used for both diagnostic connectors.
What Codes You Can Get
Listed below is the information retrievable from the various connections.
- A1 Transmission
- B1 Climate Control
- A2 Fuel System
- B2 Cruise Control
- A3 ABS
- B5 SRS
- A5 TCU (Transmission Control)
- B6 Power Seat
- A6 Ignition System
You Must Read All Codes Before Clearing
Turn the ignition off and then start the car, the check engine light should be out. It is always a good idea to check for codes, clear them and then drive the vehicle to see if they return before replacing parts. The transmission can ask the check engine light to be turned on, so if you try clearing A2 codes and they wont go away try reading the transmission (A1), clear them , and then go back to A2.