I HAVE A 1999 CHEVY 1500 Z71. tHE ABS LIGHT CAME ON AND I HAD THE GUYS AT WORK RUN A DIAGNOSTIC ON IT AND IT CAME BACK WITH A CODE OF P1902. THE BOOK WE HAVE DOES NOT SHOW THIS CODE. JUST WONDERING IF IT IS A BRAKE SENSOR OR IF IT IS THE ABS BRAIN BOX
2006-10-23 07:44:37 · 3 answers · asked by mjordan832000 1 in Cars & Transportation ➔ Maintenance & Repairs
This a G.M. Specific code, and it relates to the transmission. It is defining for a downshift control failure.
There could be a blown fuse, a failed control solenoid, or an inoperative valve in the transmission.
ALL OBD II codes follow this protocol, for all models of all manufacturers.
First Digit
P = Powertrain control management
B = Body (including Brakes)
C = Chassis
U = Network (Communications)
Second Digit
0 = SAE defined (Generic, same definition for ALL vehicles)
1 = Manufacturer specific
Third Digit
Sub System
1 = Air/Fuel management
2 = Fuel System (injectors)
3 = Ignition (Misfire)
4 = Auxillary emissions control
5 = Vehicle speed / Idle control
6 = Computer system
7 = Transmission
8 = Transmission
Fourth and Fifth digits
Specific system or device codes
Your friend may have used a code reader to retrieve the codes, and not all code readers will retrieve codes other than the "P" codes. Therefore you may need to find a repair shop that has a Scanner with software that can retrieve and interpret all codes, including the "B" & "C" codes.
Good Luck
2006-10-23 09:40:31 · answer #1 · answered by Ironhand 6 · 0⤊ 0⤋
That code is vehicle specific. Try calling a GM dealer's service department see if they can look it up.
2006-10-23 15:21:18 · answer #2 · answered by Lab 7 · 0⤊ 0⤋
man i looked this up and couldnt find that code check it again
2006-10-23 14:52:18 · answer #3 · answered by pussyplzzer 2 · 0⤊ 0⤋