2001 Sonata GLS V6 Codes

The following came up during a diagnosis at my trusty garage:

1154 "02 Transition" - ?
306 Miss in #6 cylinder
304 Miss in #4 cylinder
300 Random miss

and a few that didn't come up on thier cross reference:
81
3118
C0300

Please advise what theses codes mean.

I am in dire need of replacing spark plugs and wires - they're in terrible
shape as I've seen for myself. It's a drag that you have to remove the
intake manifold to replace the three spark plugs and wires that face the
firewall, or rear-ward!

2001 Sonata GLSV6 (has every option except antilock brakes and automatic
climate control!) has 96,000 miles. Only chaged oil-filter, auto
transmission flush-filter, and air filter and just now had the fuel filter
replaced and injectors cleaned, since buying it for 11,900 a year old, with
19k miles on it.

Right this moment having my trusty mechanic replace timing belt and
tensioner, water pump (preventive measure since the timing belt area is
opened up) plugs and wires and she oughtta be back to full stregnth.

(ouch $ - temporarily out of work!)

Any ideas on the codes. Dealer is pretty far away.

Not a bad little car at all!

Many thanks~!
Ron
wyhi_1570am|-at symbol| hotmail.com

 

I didn't mention that the AIR BAG light is lit. Was in a right side fender
(front) collision and the hyundai body show cleared it. It came back about
20k miles later. This light WAS on before the collision and the airbags. The
dealer had some kind of service bulletin campaign on it earlier I believe.
Ideas??

Many thanks,

Ron

 

P1154 refers to the transition time of the front bank upstream oxygen
sensor. There was a recall on the 2001 Sonata for this issue. If you
call the dealer with the VIN, they should be able to tell you whether
there are any open recalls on the vehicle and whether this is one of them.
If not, this oxygen sensor is relatively cheap.

P0300, P0304, P0306 indicate misfires as you have indicated. Typically,
they're caused by plug wires or plugs. Cylinders #4 and #6 are in the
front bank. I typically test by turning the car off, pulling off the plug
wires in question and just resting them back on the plugs, restarting the
car, and then gradually lifting the plug wire off the plug. If you see
spark coming off the side of the plug wire and not the bottom, you're
looking at a plug wire issue. If it's a coil issue, this usually causes
the coil to begin arcing (or there's no spark at all coming off the wire).
If it's a plug issue, the spark usually just keeps jumping off the bottom
of the wire. The other codes appear to be gibberish, possibly a
communication issue with the scan tool the shop is using.

The air bag issue could be anything. There is a recall for the side air
bag routing which is the most common cause for an air bag light. Again,
the dealer should be able to advise you about this recall over the phone.
I have seen a number of vehicles where this recall wasn't done correctly,
but most came from a now closed dealer in the DC metro area. You should
probably have a dealer look at this regardless.

If you have trouble finding out whether these recalls are open, you can
post your VIN here and I'll check.

 

I'm on my way to pick up the vehicle. Thanks for the code adivce. The oxy
sensor - they wanted to do the other maintenance first to see if it was
going on because of the misses, uncomplete combustion effects, etc.

Apprecitively,

Ron in Florida

 

Well, all is well with the 2001 Hyundai Sonata GLS V-6 again. My, she's got
a kinda powerful response!

Did the following

--Fuel Injector Service + Filter (first time at 96k miles)
--Tune Up and ignition wires (spark plugs were burned out at the inside tip!
wires were cracked and 'leaky')
--Timing belt replaced (w/tensioner of course)
--Water Pump replaced (didn't need to, but 'since you're there' kind of
thing; a preventive measure).
--oil change/filter

And we're good to go. No more P1154 code now that the engine is running
right!

Ron in FL

 

I'd expect it to take at least 2-3 days before the check engine lamp would
reappear due to the P1154 because of the testing conditions the computer
needs to verify proper O2 operation. Even if it's not fixed, those
vehicles with actual problems and open recalls tended to be very
intermittent in the code setting, so it may even take months. In any
event, the code doesn't indicate anything critical, so I wouldn't sweat it
unless the light comes back on.