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Home >> Fiat >> 2018 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 48 ((Tire Pressure Module (TPM) - Electrical Diagnostics - 500 - Electric)) >> DTC Troubleshooting >> U0019-87-Can B Bus - No Signal >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
CAN B BUS (+) AND (-) CIRCUIT OPEN
CAN B BUS (+) CIRCUIT SHORTED TO VOLTAGE
CAN B BUS (-) CIRCUIT SHORTED TO VOLTAGE
CAN B BUS (+) CIRCUIT SHORTED TO GROUND
CAN B BUS (-) CIRCUIT SHORTED TO GROUND
CAN B BUS (+) CIRCUIT SHORTED TO CAN B BUS (-) CIRCUIT
ANY CAN B BUS MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. When Monitored and Set Conditions Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .