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 DESCRIPTIONSPLATFORM ZONE MODULE (PZM)
1996 Cadillac Eldorado V8-4.6L VIN 9
Platform Zone Module (PZM)
1996 Cadillac Eldorado V8-4.6L VIN 9SECTION Platform Zone Module (PZM)
PZM DTC DESCRIPTION
ADDITIONAL DIAGNOSTIC TROUBLE CODES
These are the only PZ codes available from the manufacture, any additional codes obtained with an aftermarket scan tool are not valid PZ codes. Contact the scan tool manufacture for additional assistance.
PZ 1552 Loss of PZM Keep Alive Memory (KAM)
PZ 1556 PZM EEPROM Write Error
PZ 1558 PZM EEPROM Checksum Error
PZ 1970 Exterior Lamp Power Fault
PZ 1971 Inadvertent Power Fault
PZ 1972 Low Power Driver Fault
PZ 1973 High Power Control Fault
PZ 1981 Battery Voltage Too Low
PZ 1982 Battery Voltage Too High
PZ 2016 Loss of Serial Data - PCM
PZ 2042 Loss of Serial Communications - TCS/ABS
PZ 2056 Loss of Serial Communications - RSS
PZ 2088 Loss of Serial Communications - SIR
PZ 2096 Loss of Communications - IPC
PZ 2128 Loss of Serial Data - IRC
PZ 2152 Loss of Serial Communications - HVAC Programmer
PZ 2153 Loss of Serial Data - CCP
PZ 2255 Generic Loss of Serial Data (Source ID Unknown)
PZ 2470 Daytime Running Lamps Fault
PZ 2471 Interior Lamp Fault
PZ 2472 Low Beam Output Failure
PZ 2473 High Beam Output Fault
PZ 2476 Park Lamp Output Failure
PZ 2550 Storage Mode Entered
PZ 2719 UTD - Trunk Tamper Switch Fault
ADDITIONAL DIAGNOSTIC TROUBLE CODES
These are the only PZ codes available from the manufacture, any additional codes obtained with an aftermarket scan tool are not valid PZ codes. Contact the scan tool manufacture for additional assistance.
PZ 1552 Loss of PZM Keep Alive Memory (KAM)
PZ 1556 PZM EEPROM Write Error
PZ 1558 PZM EEPROM Checksum Error
PZ 1970 Exterior Lamp Power Fault
PZ 1971 Inadvertent Power Fault
PZ 1972 Low Power Driver Fault
PZ 1973 High Power Control Fault
PZ 1981 Battery Voltage Too Low
PZ 1982 Battery Voltage Too High
PZ 2016 Loss of Serial Data - PCM
PZ 2042 Loss of Serial Communications - TCS/ABS
PZ 2056 Loss of Serial Communications - RSS
PZ 2088 Loss of Serial Communications - SIR
PZ 2096 Loss of Communications - IPC
PZ 2128 Loss of Serial Data - IRC
PZ 2152 Loss of Serial Communications - HVAC Programmer
PZ 2153 Loss of Serial Data - CCP
PZ 2255 Generic Loss of Serial Data (Source ID Unknown)
PZ 2470 Daytime Running Lamps Fault
PZ 2471 Interior Lamp Fault
PZ 2472 Low Beam Output Failure
PZ 2473 High Beam Output Fault
PZ 2476 Park Lamp Output Failure
PZ 2550 Storage Mode Entered
PZ 2719 UTD - Trunk Tamper Switch Fault
RENDER: 1.0x
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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.