: 96 Deville No Start condition, help

02-13-05, 01:48 AM
My friend and I did a tune up on his 96 Deville( New plugs,wires,throttle body cleaning,oil change). The car started but it died after about 30 seconds of running. The codes that came up are : P0102 MAF low frequency, p0122 TPS low voltage, p0231 fuel pump feeback circuit low voltage, p0758 2-3 shift solenoid circuit electrical, p1122 TPS circuit intermittent low voltage, p1645 evap solenoid control circuit, p 1654 cruise inhibit output circuit , p1860 tcc pmw solenoid circuit electrical(what does this mean?)

These are the codes that I need to understand what they mean:


The codes that I do know lead me to think that there is something wrong with the battery. The engine has spark but has 0 fuel pressure. I checked all fuses, the scanner showed the fuel pump relay is the off position. Turning it on did not help. We changed the fuel pump and it did not help. Does anyone know what the cause of this problem might be? Any help would be very much appreciated.

02-13-05, 02:38 PM
Guys any help?

I just went out to the car and checked batt voltage and its very low at 9.6 , at this point Im thinking of swapping the battery since I do not have a VAT to perform a heavy load test.

02-13-05, 04:11 PM
Replace the battery and let us know. It may take more than 13 hours before someone can answer you.

02-13-05, 06:57 PM
Replaced the battery and no cake. However I was able to find out on a scanner that the VTD(Vehicle Theft Deterant) system is enabled(disabling the fuel pump circuit). Anyone know how to fix this? We have the correct key and remote.

02-13-05, 08:06 PM
unlock the door with the key.


02-13-05, 09:39 PM
Might be a broken wire in the column. I have heard that they are very thin and break easy. The other option is to bypass the VATS system.

02-13-05, 10:01 PM
Did the other codes go away after swapping the battery?

If not, look for loose / frayed wires and connections. Make sure the battery terminal connections and ground are clean and tight. Also check that the ignition wires are not routed to close to any other electronics.

02-14-05, 02:27 AM
Write all the codes down, then clear all the codes. Just trying to get battery cables back on will creat spikes that will incorrectly set several strange codes.

Someone else said to check the routing of the new plug cables. I've read on this board that misrouting plug wires will take them near other wiring bundles that will set codes, and actually interfer with circuit operations. I think one of these could be the shift solenoids, which you have a code set for. I would really work on the plug wire routings.

02-14-05, 04:12 AM
Plug wires are routed to each coil to match cylinder(no short to grounds). I checked all the spark and ohmed all the fuel injectors(all read about 12.3 ohms). I will try to open the door with the key tommorow and see if that will reset the anti theft system. I hope it starts up from there. I know that cadillacs are very sensitive to computer problems. Thanks for you help guys, I will check in tommorow and let you know if it works. Thanks a ton again for helpin a new guy out.:dance: :thumbsup:

02-14-05, 02:21 PM
:bonkers: The key thing didnt work.... I am really out of ideas on this one. Can you guys suggest anything else I should try before checking all the wires?>

02-14-05, 05:51 PM
Before you start going any farther, lets step back a little. If I understand you correctly, this car ran fine until you guys did a tune up, right. If that is the case, go back and look closely at what you fooled with, MAF, TPS, The 2 connectors on each side of the coil pack, plug wires. It almost has to be self inflicted, something that you touched and didn't reconnect, connected wrong, broke, etc.

09-03-07, 06:58 PM
im having the same problem , with the code pz2255 and idk what the hell the promlem is, i went to the dealer and they sed its an ignition problem with the key and to replace it , it gonna cost about $500. the money i dnt have, so its juss sitting there in my drive way takin up space!!i havent found no other site that can decode the ode pz2255.. and whats PZ if anybody could tell me plzz

09-03-07, 09:17 PM
Per http://myweb.accessus.net/~090/dtcobd2.html
"Using the Cadillac on-board diagnostic display you'll also see "IP" for the IPC instrument panel, "AC" for the air conditioning module, "TC" for traction control, "RS" for the road suspension system, "SD" for the air bags, "PZ" for the body control module, "CC" for the cell phone and "RF" for the integrated radio."
Are you sure that is the correct code?

01-25-08, 03:05 PM
i am getting some of the codes that you got. p0753 and the p1860 what did you do to correct these?