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Home >> Mazda >> 2019 >> 6 Signature >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostics - Front Body Control Module (FBCM) >> DTC B1A69-86: Error Signal Received From Humidity Sensor >> Diagnostic Procedure

Diagnostic Procedure

DTC B1A69:86 (FRONT BODY CONTROL MODULE (FBCM)) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 PERFORM DTC INSPECTION AND VERIFY HUMIDITY SENSOR MALFUNCTION Yes Replace the humidity sensor, then go to the next step.
(See RAIN SENSOR REMOVAL/INSTALLATION .)
No Go to the next step.
2 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Replace the front body control module (FBCM), then go to the next step.
(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION .)
No Go to the next step.
3 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE (FRONT BODY CONTROL MODULE (FBCM)) .)
No DTC troubleshooting completed.