BEV model family
Cadillac OPTIQ error codes and diagnostics
Diagnostic coverage for model years 2026–2027. Verified entries below are linked to this model family by source-backed applicability evidence; model membership alone is never used to invent a code relationship.
PowertrainBEV
Model years2026–2027
Verified diagnostics31
Research leads0
Verified Verified Cadillac OPTIQ diagnostic codes
Each result opens a manufacturer-specific report with the code meaning, affected vehicles, source evidence and the full diagnostic knowledge page where available.
B1596If customer concern is related to one of the symptoms below, v · 2024–2026View diagnostic report →B1A1BNA-085 or 25-NA-183 please update the radio it should correct the issue, if · 2024–2026View diagnostic report →B1A1FNA-085 or 25-NA-183 please update the radio it should correct the · 2023–2026View diagnostic report →P056216 (or similar). • If any low-voltage DTCs are active or recurring: - Do not replace the front camera. - Correct the 12 V power is · 2024–2026View diagnostic report →Service High VoltageService High Voltage · 2023–2026View diagnostic report →Super Cruise UnavailableSuper Cruise Unavailable · 2023–2026View diagnostic report →U0100up devices causing no power in 4WD low range. • Erratic electric power steering boost potentially a · 2014–2026View diagnostic report →U0101up devices causing no power in 4WD low range. • Erratic electric power steering boost potentially associat · 2014–2026View diagnostic report →U0131to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warrantie · 2024–2026View diagnostic report →U0142If customer concern is related to one of the symptoms below, verify cust · 2023–2026View diagnostic report →U0235- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684. - If a module · 2024–2026View diagnostic report →U0265If customer concern is related to one of the symptoms below, verify customers r · 2024–2026View diagnostic report →U0411to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of · 2023–2026View diagnostic report →U1126- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684 · 2024–2026View diagnostic report →U1127- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684. - If a · 2024–2026View diagnostic report →U11FDCreated On 12/12/2025 - Updated Labor Time 01/12/2026 - Updated DTC list · 2023–2026View diagnostic report →U1516NA-085 or 25-NA-183 please update the radio it should correct the issue, if the vehicle · 2024–2026View diagnostic report →U1610Conta · 2024–2026View diagnostic report →U1611If the entire bus is impacted (multiple ECUs with comm loss). • Do not replace the front camera. • Diagnose · 2024–2026View diagnostic report →U1615to-Bumper coverage (Canada Base Warranty coverage · 2023–2026View diagnostic report →U1616to-Bumper coverage (Canada Base Warranty coverage), use the f · 2023–2026View diagnostic report →U1643If the entire bus is impacted (multiple ECUs with comm loss). • Do not replace the front camera. • Diagnose the CA · 2024–2026View diagnostic report →U164BIf customer concern is related to one of the symptoms below, verify customers radio is · 2024–2026View diagnostic report →U164E: If symptom is related to a phone issue, please also make sure the customers phone is fully u · 2023–2026View diagnostic report →U164FCreated On 12/12/2025 - Updated Labor Time 01/12/2026 - Updated DTC list · 2023–2026View diagnostic report →U1862up devices causing no power in 4WD low range. • Erratic electric power steering boost potentially associated with codes U21 · 2014–2026View diagnostic report →U186Bup devices causing no power in 4WD low range. • Erratic electric power steering boost potentially associated with · 2014–2026View diagnostic report →U223Btest the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector body. If the · 2024–2026View diagnostic report →U223Ctest the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector body · 2024–2026View diagnostic report →U3000to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference · 2024–2026View diagnostic report →U300316 (or similar). • If any low-voltage DTCs are active or recurring: - Do not replace the front camera. - Correct the 12 V power issue using · 2024–2026View diagnostic report →
About this model coverage
EV Diagnostics separates vehicle catalog data from diagnostic applicability. A code is listed as verified for Cadillac OPTIQ only when supporting evidence connects that diagnostic identity to the model or its documented model-year range.
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