Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Cadillac CateraFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B1552 | LOSS OF BCM KEEP ALIVE MEMORY (KAM) |
| B1556 | BCM EEPROM WRITE ERROR |
| B1558 | BCM EEPROM CHECKSUM ERROR |
| B1970 | EXTERIOR LIGHT POWER FAULT |
| B1971 | INADVERTENT POWER FAULT |
| B1972 | LOW POWER DRIVER FAULT |
| B1973 | HIGH POWER CONTROL FAULT |
| B1982 | BATTERY VOLTAGE TOO HIGH |
| B1983 | BATTERY VOLTAGE TOO LOW |
| B2470 | DAYTIME RUNNING LIGHTS FAULT |
| B2471 | INTERIOR LIGHTS FAULT |
| B2472 | LOW BEAM OUTPUT FAULT |
| B2473 | HIGH BEAM FAULT |
| B2476 | PARKING LIGHTS OUTPUT FAULT |
| U1128 | LOSS OF SERIAL COMMUNICATIONS - IRC |
| U1255 | GENERIC LOSS OF CLASS 2 DEVICES |
| U1300 | CLASS 2 SHORT TO GROUND |
| U1301 | CLASS 2 SHORT TO BATTERY |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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