Home >> Fiat >> 2017 >> 500 Pop, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B10AD-19 To U1749-87 - 500 - Except Electric >> DTC Troubleshooting >> B1123-64 Rear Wiper Signal Plausibility Failure >> Possible Causes