I have listed a bunch of BCM/CRT fault codes below (1991).
These are all "B" codes:
Code |
Description |
110 |
Outside temperature sensor circuit |
111 |
A/C high side temp circuit |
112 |
A/C low side temp circuit |
113 |
In car temp sensor circuit |
115 |
Sunload sensor circuit |
119 |
Twilight photocell circuit |
120 |
Twilight pot delay circuit |
121 |
Twilight enable circuit |
122 |
Panel dimming potentiometer |
123 |
Panel lamp switch |
127 |
Gear selector circuit |
132 |
Oil pressure sensor circuit |
140 |
Phone system fault |
332 |
Compass data lost |
333 |
Air bag data lost |
334 |
ECM/PCM data lost |
335 |
ECCP or CRTC/DID data lost |
336 |
IPC data lost |
337 |
HVAC data lost |
If you have all the 33x (332 - 337) codes consider a serial data highway fault. You can't enter diagnostics if all of these codes are current. |
|
410 |
Charging system circuit fault |
411 |
Charge voltage low |
412 |
Charge voltage high |
440 |
Air mix door problem |
446 |
A/C fault, low side temp drops too quickly (more refrigerant needed?) |
447 |
A/C fault, low side temp drops much too quickly (this will disengage the a/c, you need to clear codes before it will start again) |
448 |
Low refrigerant pressure switch open for too long |
449 |
High side temp too high |
450 |
Coolant too hot |
552 |
BCM keep alive memory error (not a fault if you have disconnected the battery) |
556 |
Odometer EEPROM error |
CRT and DID error codes
Code |
Description |
C710 |
CRTC/DIDC to CRTM/DIDM communication error |