C0186 on the 2015 Buick Regal
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| PIT5076E | 2017-08-15. Service bulletin. This Preliminary Information communication advises the technician to insure that global diagnostic service 2 diagnostic packages are up to date prior to learning the steering angle sensor for a diagnostic trouble code C710 symptom code 71 set in the electronic brake control module or the power steering control module. When rechecking for diagnostic trouble codes a U0074 U0077, U0180D, U01293, U0126, U0125, C0186, C0196, or C0287 are set and will not clear diagnose the Chassis bus. If no fault is found in the chassis bus check for an multiple diagnostic interface to data link connector issue. Technician is to try a different multiple diagnostic interface cable and attempt the steering angle sensor learn again following service information instruction then try to clear the codes again. |
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| PI1525A | 2017-08-15. Service bulletin. This preliminary informational bulletin provides diagnostic tips to correct a customer concern of Airbag Readiness Light on, and technician may find DTC B101D SYM 00 and C0186, C0196 and/or C0287 set. |
| PI1525 | 2017-08-15. Service bulletin. This preliminary informational bulletin provides diagnostic tips to correct a customer concern of Airbag Readiness Light on, and technician may find DTC B101D SYM 00 and C0186, C0196 and/or C0287 set. |
3 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.