: Service Engine Light and history codes

02-21-06, 09:28 AM
I have 98 Eldo ETC, and for the past few months the Service Engine light has come and gone. The first time I had a dealer check it out and they found nothing, cleared everything and it was fine for a while. The second time I ran for codes and only got history codes, and the light went off after I ran them.
This time it came on and I have history codes again.
PCM 0300, 0603, 1599
SDM B1327
-all history codes but the light remains on.

Any thoughts suggestions?
I cleaned the TB about 2k miles ago, spark plugs 2k miles ago. 102K on the car.
No other issues to indicate anything???


02-21-06, 10:25 AM
The 0300 is misfire. I'd change the plug wires next.

02-21-06, 10:59 AM
I'm with Zonie. P0300 is misfire and P1599 is stall or near stall detected. P603 is probably from pulling battery power.

B1327 - Vehicle system voltage below 9.0 volts.
Maybe time for a battery.

02-21-06, 08:03 PM
Thanks guys. I just got a new battery within the last 8 mo. So I don't think a battery is a problem.

My mech. said the pulg wires looked ok, but perhaps it is time.

Thanks for the code readings.

Any other suggestions are appreciated.

02-21-06, 08:19 PM
You can't tell bad wires by looking at them.

I have had batteries fail in 6 months. In fact, I have had them bad right off the shelf, so don't overlook the battery with that code just becasue it is only 8 months old. Check it out. Low voltage will cause these cars to do all sorts of wierd things.

03-02-06, 12:18 PM
The replacement of plug wires has appeared to cure the issue and the service engine light is off. Thanks boys!

03-02-06, 12:51 PM
And Thank You for letting us know!

03-02-06, 01:25 PM
I have a '97 STS - Anyone know the keypad sequence I need to display the computer codes? Mine has the passenger seat temp adjust 1 to 5 up or 1 to 5 down, over at the extreme right.

03-02-06, 05:13 PM
I think yours might be OFF & PASSENGER WARMER. If you don't have that combo, then it should be INFO UP & OFF.