BEV model family
Cadillac LYRIQ error codes and diagnostics
Diagnostic coverage for model years 2023–2027. 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 years2023–2027
Verified diagnostics124
Research leads0
Verified Verified Cadillac LYRIQ 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.
Automatic Collision Prep ReducedAutomatic Collision Prep Reduced · 2017–2025View diagnostic report →B020ACorrection Do not replace any parts at this ti · 2025View diagnostic report →B1325Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca · 2014–2023View diagnostic report →B1596If customer concern is related to one of the symptoms below, v · 2024–2026View diagnostic report →B19C8Model: Model · 2024View diagnostic report →B19C9Model: Model Year: V · 2024View diagnostic report →B19DA16 if its active and let the customer know to have the Labor Operation Description Labor Time 3486158 Verify B19DA Is Set In The K73 Module .2 Hr. *This is a unique Labor Operation · 2024View diagnostic report →B1A05Follow SI 6656059 for this condition. If SI directs replacement of B174W · 2024–2025View 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 →B1AAEPassive Entry Closure 2 Antenna Circuit High - Circuit Open · 2024View diagnostic report →B1C48Correction Do not replace any parts at this time. Engineering · 2025View diagnostic report →B1C64PIT6274B Published date: 01/8/2025 Preliminary I · 2025View diagnostic report →B1D7304 may set in the radio, along with DTCs in the BCM for the VCD • Black screen • Drive mode titles and icons overlap • Icon changes • Not a · 2023View diagnostic report →C0000Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca · 2014–2023View diagnostic report →C0035Customer Concern Not Duplicated (CCND) Customer states steering noise / whine when turning at parking lot speeds at cold temperatures. Followed SI p · 2023–2024View diagnostic report →C0040Customer Concern Not Duplicated (CCND) Customer states steering noise / whine when turning at parking lot speeds at cold temperatures. Followed SI procedures · 2023–2024View diagnostic report →Forward Collision System ReducedForward Collision System Reduced · 2017–2025View diagnostic report →LCDD Data Provisioning failedLCDD Data Provisioning failed · 2023View diagnostic report →P0534Air Conditioning Refrigerant Charge Low • P1E00 - Hybrid/Electric Vehicle Powertrain Control Module 2 Requested Malfunction Indicator Lamp Illumination Cause GM Engineering is atte · 2023–2024View 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 →P0AA6voltage battery surge tank and document via photo. 3. Observe and record th · 2023–2026View diagnostic report →P0AA7voltage battery surge tank and do · 2023–2024View diagnostic report →P0AE3Added Chart and 2025 Model Year · 2023–2026View diagnostic report →P0C78Added Chart and 2025 Model Year · 2023–2026View diagnostic report →P0D40Customer Concern Not Duplicated (CCND) Customer states the engine wont crank or start. Performed related system verification procedure in SI with no DTCs found and unable to duplic · 2023View diagnostic report →P0D4FCustomer Concern Not Duplicated (CCND) Customer states the engine wont crank or start. Performed related system verification procedure in SI with no DTCs found and unable to duplic · 2023View diagnostic report →P1C34voltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16 – Battery Energy Control Module -> Data Display -> High · 2023–2025View diagnostic report →P1E00Hybrid/Electric Vehicle Powertrain Control Module 2 Requested Malfunction Indicator Lamp Illumination Cause GM Engineering is attempting to determine the root cause of the above co · 2023–2024View diagnostic report →P3029no MIL, type C · 2023View diagnostic report →Service High VoltageService High Voltage · 2023–2024View 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 · 2014–2024View 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 · 2023View diagnostic report →U0140to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation · 2023View diagnostic report →U0142If customer concern is related to one of the symptoms below, verify cust · 2024–2026View 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 →U023BCreated · 2025View diagnostic report →U023CCreated. 05/24/2023 · 2023View 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 →U053Bto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate · 2023–2025View diagnostic report →U053CPage 2 March, 2025 Bulletin No.: 25-NA-060 GM bulletins are intended for use by professional · 2025View diagnostic report →U1126- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684 · 2024–2025View diagnostic report →U1127- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684. - If a · 2024–2025View 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 · 2023View diagnostic report →U1611If the entire bus is impacted (multiple ECUs with comm loss). • Do not replace the front camera. • Diagnose · 2024–2025View diagnostic report →U1615to-Bumper coverage (Canada Base Warranty coverage · 2023–2025View diagnostic report →U1616to-Bumper coverage (Canada Base Warranty coverage), use the f · 2023–2026View diagnostic report →U1617to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicab · 2023View diagnostic report →U1624to-Bumper cov · 2025View diagnostic report →U1639Contact General Mo · 2023View diagnostic report →U1643If the entire bus is impacted (multiple ECUs with comm loss). • Do not replace the front camera. • Diagnose the CA · 2024–2025View diagnostic report →U164BIf customer concern is related to one of the symptoms below, verify customers radio is · 2023–2026View diagnostic report →U164E: If symptom is related to a phone issue, please also make sure the customers phone is fully u · 2024–2026View diagnostic report →U164FCreated On 12/12/2025 - Updated Labor Time 01/12/2026 - Updated DTC list · 2023–2026View diagnostic report →U1666voltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16– Battery Energy Control Module -> Data Display -> High · 2023–2025View diagnostic report →U1667voltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16– Battery Energy Control Module -> Data Display -> High · 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 · 2014–2024View diagnostic report →U1962Correction: The dealer will need to perform the Serial Data Authentication Con guration (SDAC) following Instructions in SI using Document ID: 5404959. Be sure the vehicle is Power · 2023–2024View diagnostic report →U1973In some cases, these DTC's will not be set. Cause This condition may be caused if t · 2023–2025View diagnostic report →U1978If the above items do not correct the concern, th · 2023–2025View diagnostic report →U197AEthernet Time Synchronization Signal Invalid (set by B174W ). − U0499 – Invalid Data Received from Telematics Control Platform Module (se · 2024–2025View diagnostic report →U197EIn some cases, these DTC's will not be set. Cause This condition may be caused if the VIN · 2023–2025View diagnostic report →U197FIf DTC U1978 is set, then reprogramming the IPC wil · 2023–2025View diagnostic report →U2100Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca · 2014–2023View diagnostic report →U2107Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca · 2014–2023View diagnostic report →U2109Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca · 2014–2023View diagnostic report →U2220to-Bumper coverage (Canada Base Warranty coverage), use the following la · 2023View diagnostic report →U2221to-Bumper coverage (Canada Base Warranty coverage), use the following labor ope · 2023–2024View diagnostic report →U2222to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation · 2023–2024View diagnostic report →U2223to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Refere · 2023View diagnostic report →U2224to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the · 2023–2024View diagnostic report →U2225to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applic · 2023View diagnostic report →U2226to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Wa · 2023View diagnostic report →U2227to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warrantie · 2023View diagnostic report →U2228to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties secti · 2023View diagnostic report →U2229to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of I · 2023View diagnostic report →U222Ato-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investig · 2023View diagnostic report →U222Bto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Veh · 2023–2024View diagnostic report →U222Cto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle Hi · 2023View diagnostic report →U222Dto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History ( · 2023View diagnostic report →U222Eto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) fo · 2023–2024View diagnostic report →U222Fto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for cover · 2023–2024View diagnostic report →U2230to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023View diagnostic report →U2231to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023–2024View diagnostic report →U2232to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023–2024View diagnostic report →U2233to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023View diagnostic report →U2234to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023View diagnostic report →U2235to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023–2024View diagnostic report →U2236to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023View diagnostic report →U2237to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage · 2023View 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 →U2426voltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16– Battery Energy Control Module -> Data Display -> High · 2023–2026View diagnostic report →U2427voltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16– Battery Energy Control Module -> Data Display -> High · 2023–2025View diagnostic report →U2A90In some cases, these DTC's will not be set. Cause This condition may be caused if the VIN or mileage fai · 2023–2025View diagnostic report →U2A91In some cases, these DTC's will not be set. Cause This condition may be caused if the VIN or mileage fails to w · 2023–2025View diagnostic report →U2B7AU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632 · 2023–2024View diagnostic report →U2B7EU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634 · 2023–2024View diagnostic report →U2B82U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634, U3636 · 2023–2024View diagnostic report →U2B86U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634, U3636, U3638 · 2023–2024View diagnostic report →U2BF3Please have ready current session log including "Vehicle DTC and ID infor · 2024View diagnostic report →U2BF6Please have ready current session log including "Vehicle DTC and ID information.” This · 2024View diagnostic report →U2BFCvoltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16– Battery Energy Control Module -> Data Display -> High · 2023–2024View diagnostic report →U2BFFloss of isolation · 2023View 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 · 2024–2025View diagnostic report →U3006to-Bumper coverage (Canada Base Warra · 2023View diagnostic report →U359Evoltage battery surge tank and document via photo. 3. Observe and record the Batte · 2023–2024View diagnostic report →U35B5voltage battery surge tank and document via photo. 3. Observe and record the Battery Energy Control Module parameter(s); K16 – Battery Energy Control Module -> Data Display -> High · 2023–2025View diagnostic report →U362FU3620 · 2023–2024View diagnostic report →U3631U3620, U3622 · 2023–2024View diagnostic report →U3633U3620, U3622, U3624 · 2023–2024View diagnostic report →U3635U3620, U3622, U3624, U3626 · 2023–2024View diagnostic report →U3637U3620, U3622, U3624, U3626, U3628 · 2023–2024View diagnostic report →U3639U3620, U3622, U3624, U3626, U3628, U362A · 2023–2024View diagnostic report →U363BU3620, U3622, U3624, U3626, U3628, U362A, U362C · 2023–2024View diagnostic report →U363DU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E · 2023–2024View diagnostic report →U363FU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630 · 2023–2024View diagnostic report →
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EV Diagnostics separates vehicle catalog data from diagnostic applicability. A code is listed as verified for Cadillac LYRIQ only when supporting evidence connects that diagnostic identity to the model or its documented model-year range.
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