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.
1997 Cadillac Eldorado BaseFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DTCS
| DTC | Description |
|---|---|
| B0532 | FUEL LEVEL SENDER SHORT TO GROUND |
| B0533 | FUEL LEVEL SENDER SHORT TO VOLTAGE |
| B1552 | LOSS OF PZM KEEP ALIVE MEMORY (KAM) |
| B1556 | PZM EEPROM WRITE ERROR |
| B1558 | PZM EEPROM CHECKSUM ERROR |
| B1970 | EXTERIOR LIGHT POWER FAULT |
| B1971 | INADVERTENT POWER FAULT |
| B1972 | LOW POWER CONTROL FAULT |
| B1973 | HIGH POWER CONTROL FAULT |
| B1981 | BATTERY VOLTAGE TOO LOW |
| B1982 | BATTERY VOLTAGE TOO HIGH |
| B1983 | SOURCE VOLTAGE TOO LOW |
| B2470 | DAYTIME RUNNING LIGHTS FAULT |
| B2471 | INTERIOR LIGHTS FAULT |
| B2472 | LOW BEAM OUTPUT FAULT |
| B2473 | HIGH BEAM OUTPUT FAULT |
| B2476 | PARKING LIGHTS OUTPUT FAULT |
| B2477 | REVERSE RELAY SHORTED TO GROUND |
| B2478 | REVERSE RELAY SHORTED TO VOLTAGE |
| B2502 | PARK RELAY (BTSI) SHORTED TO GROUND |
| B2503 | PARK RELAY (BTSI) SHORTED TO VOLTAGE |
| B2550 | STORAGE MODE ENTERED |
| B2719 | UTD - TRUNK TAMPER SWITCH FAULT |
| U1016 | LOSS OF SERIAL COMMUNICATIONS - PCM |
| U1088 | LOSS OF SERIAL COMMUNICATIONS - SIR |
| U1096 | LOSS OF SERIAL COMMUNICATIONS - IPC |
| U1153 | LOSS OF SERIAL COMMUNICATIONS - CCP |
| U1169 | LOSS OF SERIAL COMMUNICATIONS - MMM |
| U1255 | CLASS 2 INITIALIZATION ERROR |
| U1300 | CLASS 2 SHORT TO GROUND |
| U1301 | CLASS 2 SHORT TO VOLTAGE |
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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