Try driving it a few hundred feet. It goes through an initialization process and after everything checks out it extinguishes the light.

...Lee

..and get the speed over 15 mph

I was looking at possibly swapping the plug leads on my friends car as it is currently fitted with NGK leads. I have heard mixed reviews on those where they either work great or don't. Currently they are running fine and engine is smooth. I can buy Bougicord leads from Volvo parts suppliers (some st...

Port A6?

https://www.matthewsvolvosite.com/read-codes-volvo-850/

A1 1-1-4 should be sorted out.
It's program selector open or short circuit to supply.

I just saw that your car is '94 850 GLE.
GLE in EU is 10v car...should be in AUS too.
Is it 2.0 or 2.5?

Replace the cap rotor and wires as budget allows, Buster. At least clean the brass parts until they are shiny. Use Bougicord for the wires , the other brands cause problems.

Three prong Bosch or Volvo plugs for non turbo cars , single prong ones for turbos

Is it 10v or 20v?
Ignition cables are not interchangeable between these two engines.

About transmission codes...it could be PNP switch or S,E & W switch on center console.

It’s stamped into the block on the right side of car near firewall. You usually have to clean it to read it. It’s holes punched into aluminum in shapes of numbers.

Hi every one, I am trying to positively identify if my AUTRALIAN DELIVERED 1994 850 sedan is 10 valve or 20 valve. I can see no identifying numbers on the motor or I.D plates. The owners manual in the glove box lists 5 motors it could be and naturally these include both 10 and 20 valve motors which...

Bougicord only.

If you must go with aftermarket...go with Bosch or NGK.

They will not last and perform like Bougicord...but they will last for a while.

+ 1 on misha's recommendations. I have a friend who's 98 V70 is running on NGK and has been for about 40,000km and 5 years.

Neil.