Getting codes 455 and 543 from a 95 850 Turbo.

SidneyAB · Post by **SidneyAB** » 16 Nov 2007, 15:56

Hi,

I get the codes 455 and 543 from my 95 850 Turbo the car has 75k miles, and I don't know what this codes means. I the list supplied by the forum I have:

455 - Missfire cylinder 5
543 - missfireat least one cylinder

What exactly it means? I cant find "missfire" in my dictionary, writing from Brazil.

Thanks.

Post by **MadeInJapan** » 16 Nov 2007, 15:59

Check your plug wires...and plugs. If they are old, change them out. #5 is furthest on your left looking at the car from the front with the hood raised. Probably the 2 codes are duplicate codes for the same issue.

tripleb · Post by **tripleb** » 16 Nov 2007, 18:07

Correct MIJ, they are both set for the same fault.

It means that the #5 cylinder is not working properly.

It can have a faulty spark plug, plug wire or distributor cap.

The injector can be defective or have a wiring problem.

The cylinder can have a mechanical problem, meaning low compression, from say a burned valve or bad rings.

Does the engine run rough? If so, you may want to do a compression check on #5 cylinder.

Check the ignition system, like MIJ said.

Hope this helps, good luck

B

SidneyAB · Post by **SidneyAB** » 17 Nov 2007, 05:02

The motors runs smooth, but the light turns on in the dash, two times this week for the same reason, the codes 543 and 455.

I'll buy a plug tools to remove then and see what happen.

Thanks.

kahf2008 · Post by **kahf2008** » 15 Jul 2010, 22:58

Hi, and thank you for the post, I have got the code 543 today when I did a bad mistake, I bought a hose plug and I put in in place of other hose that was closed with a bolt,. after I left the junk yard, I started the car, and I drove it about 100 feet when I heard a noise. I tought it is something normal with compression, then the car kept shaking and making more fire noises, then it stopped, when I pulled over I found the spark on the coolant side crashed and dirty but others were fine, I towed my car to the house, I changed the spark plus, but I found pieces of metal inside the EGR, I looked for the antifreeze in the tank which was empty, I checked then the oil dipstick and I found it full! the car doesnt crank or start. I guess it is head gasket and bent valves, am I right, or I hope there is something easy to fix. I love my volvo, ad I want to save it. Thank you guys.

: hose with bolt

kahf2008 · Post by **kahf2008** » 15 Jul 2010, 23:09

other pics, shown here, and the spark plug crushed. please help me guys, what was that tower? is it EGR? and why it made that issue?

Post by **jblackburn** » 16 Jul 2010, 08:56

That's the idle control valve hose in the lower picture, but I'm not sure what happened to your spark plug. I'm thinking your timing belt jumped and may have smashed a valve into it.

kahf2008 · Post by **kahf2008** » 18 Jul 2010, 11:41

Thank you for the reply, I was reading about the pcv glugged, I witnessed some fumes coming out when I remove the oil dipstick, I THOUGHT IT IS NORMAL, BUT WHEN I read about the pcv clug, I think that was th problem , any idea?

kahf2008 · Post by **kahf2008** » 20 Jul 2010, 18:57

Hi guys, I checked on the car after 4 days of backfire, and when I opened the oil cap I found it empty from oil, do yall think the problem is being big? I am thinking of staring to open the engine but I do ot have a garage.

kahf2008 · Post by **kahf2008** » 21 Aug 2010, 22:45

I am going to open the engine and see what is hidden inside, soon I will pos new pics