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.
2012 Fiat 500 Pop, Automatic TransFACTORY OEM SERVICE PROCEDURE
Module, Tire Pressure (TPM)
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| C1001-21 | SENSOR A-BATTERY LOW |
| C1001-31 | SENSOR A-RF FAILURE |
| C1001-96 | SENSOR A-FAULT |
| C1002-21 | SENSOR B-BATTERY LOW |
| C1002-31 | SENSOR B-RF FAILURE |
| C1002-96 | SENSOR B-FAULT |
| C1003-21 | SENSOR C - BATTERY LOW |
| C1003-31 | SENSOR C-RF FAILURE |
| C1003-96 | SENSOR C-FAULT |
| C1004-21 | SENSOR D - BATTERY LOW |
| C1004-31 | SENSOR D-RF FAILURE |
| C1004-96 | SENSOR D-FAULT |
| C1009-42 | ECU-EEPROM FAILURE |
| C1009-49 | ECU-INTERNAL FAILURE |
| C1010-54 | MISSING SENSOR ID |
| C1012-88 | TIRE PRESSURE SENSOR LOCATION UNDETERMINED |
| C1013-88 | DUPLICATE TIRE PRESSURE SENSOR IDS |
| C1014-88 | LEFT/RIGHT SIDE TIRE PRESSURE SENSOR LOCATION UNDETERMINED |
| C1015-88 | FRONT/REAR TIRE PRESSURE SENSOR LOCATION UNDETERMINED |
| C1016-88 | TPM SYSTEM DEACTIVATED-WINTER MODE |
| U0019-87 | CAN B BUS - NO SIGNAL |
| U0019-88 | CAN B BUS OFF |
| U1700-86 | IMPLAUSIBLE DATA RECEIVED FROM BCM |
| U1700-87 | LOST COMMUNICATION WITH BCM |
| U1703-86 | IMPLAUSIBLE DATA RECEIVED FROM IPC |
| U1703-87 | LOST COMMUNICATION WITH IPC |
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.