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.
2017 Fiat 500L LoungeFACTORY OEM SERVICE PROCEDURE
Module, Park Assist (PTS/PAM)
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B1000-44 | ELECTRONIC CONTROL UNIT - DATA MEMORY FAILURE |
| B1000-45 | ELECTRONIC CONTROL UNIT - PROGRAM MEMORY FAILURE |
| B1000-46 | ELECTRONIC CONTROL UNIT - CALIBRATION/PARAMETER MEMORY FAILURE |
| B1000-47 | ELECTRONIC CONTROL UNIT - WATCHDOG/SAFETY FAILURE |
| B1000-96 | ELECTRONIC CONTROL UNIT - COMPONENT INTERNAL FAILURE |
| C100B-12 | REAR OUTER LEFT SENSOR SHORT TO BATTERY |
| C100B-14 | REAR OUTER LEFT SENSOR OPEN CIRCUIT OR SHORT TO GROUND |
| C100B-29 | REAR OUTER LEFT SENSOR INVALID SIGNAL/INTERNAL FAILURE |
| C100C-12 | REAR INNER LEFT SENSOR SHORT TO BATTERY |
| C100C-14 | REAR INNER LEFT SENSOR OPEN CIRCUIT OR SHORT TO GROUND |
| C100C-29 | REAR INNER LEFT SENSOR INVALID SIGNAL/INTERNAL FAILURE |
| C100D-12 | REAR INNER RIGHT SENSOR SHORT TO BATTERY |
| C100D-14 | REAR INNER RIGHT SENSOR OPEN CIRCUIT OR SHORT TO GROUND |
| C100D-29 | REAR INNER RIGHT SENSOR INVALID SIGNAL/INTERNAL FAILURE |
| C100E-12 | REAR OUTER RIGHT SENSOR SHORT TO BATTERY |
| C100E-14 | REAR OUTER RIGHT SENSOR OPEN CIRCUIT OR SHORT TO GROUND |
| C100E-29 | REAR OUTER RIGHT SENSOR INVALID SIGNAL/INTERNAL FAILURE |
| C1017-1C | SENSOR POWER SUPPLY - CIRCUIT VOLTAGE OUT OF RANGE |
| U1001-87 | C2 CAN - MISSING MESSAGE |
| U1001-88 | C2 CAN - BUS OFF |
| U1700-29 | BCM (BODY COMPUTER MODULE) - SIGNAL INVALID |
| U1700-35 | BCM (BODY COMPUTER MODULE) - SIGNAL HIGH TIME MAXIMUM |
| U1700-86 | BCM (BODY CONTROL MODULE) - SIGNAL INVALID |
| U1700-87 | BCM (BODY CONTROL MODULE) - MISSING MESSAGE |
| U1706-29 | BSM (BRAKING SYSTEM MODULE) - SIGNAL INVALID |
| U1706-86 | BRAKING SYSTEM MODULE (BSM) - SIGNAL INVALID |
| U1706-87 | BRAKING SYSTEM MODULE (BSM) - MISSING MESSAGE |
| U173F-29 | TTM (TRAILER TOW MODULE) - SIGNAL INVALID |
| U173F-86 | TTM (TRAILER TOW MODULE) - MISSING MESSAGE |
| U173F-87 | TTM (TRAILER TOW MODULE) - MISSING MESSAGE |
| U1930-29 | IGNITION WORKING CONDITION SIGNAL FROM BCM - SIGNAL INVALID |
| U1932-29 | IGNITION WORKING CONDITION SIGNAL FROM BCM - SIGNAL INVALID |
| U1933-86 | BCM COMMAND FROM BODY COMPUTER MODULE - SIGNAL INVALID |
| U1933-87 | BCM COMMAND MESSAGE FROM BCM (BODY COMPUTER MODULE) ABSENT - MISSING MESSAGE |
| U193B-29 | BH IGW1 FROM BODY COMPUTER MODULE - SIGNAL INVALID |
| U193B-86 | BH IGW1 FROM BODY COMPUTER MODULE - SIGNAL INVALID |
| U193B-87 | BH IGW1 FROM BODY COMPUTER MODULE - MISSING MESSAGE |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.