code 43

Help, my 99 GC check engine came on and I was able to decode it to a code 43 (misfire). Engine runs OK, not 100%. Can anone point me in the right direction to fix? I'm thinking plugs and wires...

If u have it scan with a scan tool it can tell you a more detailed code (it could pin point the cylinder that is missfiring). You can get it scanned for free at Autozone.

not that you would, but you could buy a decoder for like $100. Which isnt very bad, if youve had problems before. I believe they work on all brands of cars. or you could buy one for about $200 and it gives you a detailed readout of the problem (i.e. what cylinder is the source of the problem). This post probably doesnt help you any, but its an idea.

Help, my 99 GC check engine came on and I was able to decode it to a code 43 (misfire). Engine runs OK, not 100%. Can anone point me in the right direction to fix? I'm thinking plugs and wires...
I think you should recheck that code.
If its a 1999 Jeep Grand Cherokee the description for a code 43 is -

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

http://www.wjjeeps.com/faultcodes.htm#0010

it's not an OBD II type code, it's the CHECK ENGINE light flash code - count the # of flashes the check engine light flashes.

Those codes are specific for a DRB (Digital Readout Box) Scanner.

If he used a scan tool it would actually come up as P0300, 0301, 0302, 0303, 0304, etc or if it was displayed on a digital odometer it would look the same way. which would tell exactly which Cylinder was misfiring.

it's not an OBD II type code, it's the CHECK ENGINE light flash code - count the # of flashes the check engine light flashes.

Well, something seems amiss here-- if its a 1999 Jeep Grand Cherokee he should be able to use the OBDII, key on off method to retrieve the p**** error codes on the OD.
The flash count (OBDI) method shouldn't even be available on a '99>

that might be true. Didn't think about it.

The 99 gjc has a digital odo. readout, also the code is cylinder spicific.
I have a 99 w/4.0 that misfires on #3 cylinder a couple times a year for what appears no reason.

theirs only one way to find out.......

NBGC99 - How did u get this code (code 43). was it displayed as code P0043 from a DRB scan tool from the dealership or mechanic? or was it extracted using the CHECK ENGINE light flashes or digital odometer.

I guess we're are all a little confused on this one.

Help, my 99 GC check engine came on and I was able to decode it to a code 43 (misfire). Engine runs OK, not 100%. Can anone point me in the right direction to fix? I'm thinking plugs and wires...


http://www.wjjeeps.com/tsb_list.htm#0900303 HERE TSB THAT YOU CAN CHECK ON DALE