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.
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HOMESERVICE MANUALSCADILLAC1996ELDORADO V8-4.6L VIN 9REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE DESCRIPTIONSBODY CONTROL MODULE (BCM)
1996 Cadillac Eldorado V8-4.6L VIN 9
Body Control Module (BCM)
1996 Cadillac Eldorado V8-4.6L VIN 9SECTION Body Control Module (BCM)
SYSTEM CHART
Chart A Scan Tool Will Not Communicate
DTC DESCRIPTION
DTC PZ 1552 Loss of PZM Keep Alive Memory (KAM)
DTC PZ 1556 PZM EEPROM Write Error
DTC PZ 1558 PZM EEPROM Checksum Error
DTC PZ 1970 Exterior Lamp Power Fault
DTC PZ 1971 Inadvertent Power Fault
DTC PZ 1972 Low Power Driver Fault
DTC PZ 1973 High Power Control Fault
DTC PZ 1981 Battery Voltage Too Low
DTC PZ 1982 Battery Voltage Too High
DTC PZ 2016 Loss of Serial Data - PCM
DTC PZ 2042 Loss of Serial Communications - TCS/ABS
DTC PZ 2056 Loss of Serial Communications - RSS
DTC PZ 2088 Loss of Serial Communications - SIR
DTC PZ 2096 Loss of Communications - IPC
DTC PZ 2128 Loss of Serial Data - IRC
DTC PZ 2152 Loss of Serial Communications - HVAC Programmer
DTC PZ 2153 Loss of Serial Data - CCP
DTC PZ 2255 Generic Loss of Serial Data (Source ID Unknown)
DTC PZ 2470 Daytime Running Lamps Fault
DTC PZ 2471 Interior Lamp Fault
DTC PZ 2472 Low Beam Output Failure
DTC PZ 2473 High Beam Output Fault
DTC PZ 2476 Park Lamp Output Failure
DTC PZ 2550 Storage Mode Entered
DTC PZ 2719 UTD - Trunk Tamper Switch Fault
Chart A Scan Tool Will Not Communicate
DTC DESCRIPTION
DTC PZ 1552 Loss of PZM Keep Alive Memory (KAM)
DTC PZ 1556 PZM EEPROM Write Error
DTC PZ 1558 PZM EEPROM Checksum Error
DTC PZ 1970 Exterior Lamp Power Fault
DTC PZ 1971 Inadvertent Power Fault
DTC PZ 1972 Low Power Driver Fault
DTC PZ 1973 High Power Control Fault
DTC PZ 1981 Battery Voltage Too Low
DTC PZ 1982 Battery Voltage Too High
DTC PZ 2016 Loss of Serial Data - PCM
DTC PZ 2042 Loss of Serial Communications - TCS/ABS
DTC PZ 2056 Loss of Serial Communications - RSS
DTC PZ 2088 Loss of Serial Communications - SIR
DTC PZ 2096 Loss of Communications - IPC
DTC PZ 2128 Loss of Serial Data - IRC
DTC PZ 2152 Loss of Serial Communications - HVAC Programmer
DTC PZ 2153 Loss of Serial Data - CCP
DTC PZ 2255 Generic Loss of Serial Data (Source ID Unknown)
DTC PZ 2470 Daytime Running Lamps Fault
DTC PZ 2471 Interior Lamp Fault
DTC PZ 2472 Low Beam Output Failure
DTC PZ 2473 High Beam Output Fault
DTC PZ 2476 Park Lamp Output Failure
DTC PZ 2550 Storage Mode Entered
DTC PZ 2719 UTD - Trunk Tamper Switch Fault
RENDER: 1.0x
NO RELATED
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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.