The VDP has been running fine, until last evening when the check engine light came on. We left the house, drove about 5 miles on the hwy with no problems. Unfortunately I was unable to avoid the rumble strips on the side of the hwy because of the car that was barreling down upon us. I was forced to brake on the rumble strips, which were pretty rough. Drove another 30-40 yards, parked and had supper. It was upon leaving that when I started the car, the 'check engine' light came on and has stayed on. The boys at AZ scanned it and these are the codes:

1111
1637
1642
1647

Can anyone provide some help with definitions for these codes?

thanx

 

Crosbo, here are what the codes are:

P1111-All system checks complete with no problems noted
P1637-Can Link ECM/ABSCM Circuit / Network Malfunction
P1642-CAN circuit malfunction
P1647-ECM HO2 Sensor control malfunction – bank 2 upstream (2/1)

Based on what you are seeing, I would first attempt to clear the codes. if they return, then you are more than likely looking at a communications issue between the ECM and another module. With that being said, possibly a bad ECM. This is one of those things that spending $100 to have a qualified tech look at the car to prove the ECM bad will be well worth the money spent. it is possible that the computer simply "hick-up'ed" and this resulted.

Not sure what else to tell you. The light should also clear after starting the car about 6 times provided the issue is clear and hasn't returned at any time during the driving of those 6 starts.

 

Thanx for the info Thermo. I greatly appreciate it.

 

bic, code P1000 is System checks not complete since last memory clear. To clear this code, open up the fuse box inside the engine bay and pull fuse #4 (10 amp). That should clear your ECM memory and get rid of the code too. One warning though, this will also clear the memory for how you drive the car (ECM learns how you drive to maximize the engine settings). So, the first time you start up the car after this, the motor may run a little rougher than normal and you should drive the car at a moderate speed (30 mph or so) and do a few normal stops. This will allow the car to relearn how to control the car.

 

Thermo, the Restricted Performance has disappeared, but the Check Engine has not. Would the fuse removal process also work on my '99?

I assume that this would not only allow me to "reset" some things now that I have cleaned MAF and Throttlebody and cleared the Partial Load port, but this would also allow me to see if the message returns or if it was just a "hiccup".

 

replying to track this thread, need to pull the fuse on my car

 

I thought the p1000 code will alway be there until it completes its emissions tests. Then it will change to p1111.

I've always had this code in my Jag even after many,many code clears.