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Cadillac EV diagnostics
Browse in-scope 2021+ battery-electric and plug-in hybrid model families, plus evidence-labelled diagnostic records.
4 model families133 verified5 accepted research300 reference candidates
Cadillac LYRIQModels
Verified Manufacturer-level verified records
These records passed the verified evidence gate. Model applicability is shown only where separately supported.
B101D– in the U.S., refer to GM Training video 10212.01D (JanuaryU2109Cannot 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 caB1325Cannot 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 caC0000Cannot 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 caU2100Cannot 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 caU2107Cannot 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 caP0BBEHybrid Battery Pack Voltage Variation Note: The vehicle will prevent a subsequent start attempt with a latched DTC P0AFA. Cause This condition may be caused by one or more of the 9P07A73 clutch return spring ring (1) that has come out of its groove, causing the Variable 1-4 and 1-3 Clutch Piston Return Spring Plate to contact (2) the variable clutch plate assemblP16DCBattery Sensor Monitor Timer Performance (DTC P16DC disables the Stop/ Start System) • P305D: DC/DC Converter Crank Control Circuit High Voltage • P305E: DC/DC Converter Crank ContU01B0Lost Communication with Battery Monitor Module • U0284: Lost Communication with Active Grille Air Shutter 1 Motor Module • U0285: Lost Communication with Active Grille Air ShutterU0284Lost Communication with Active Grille Air Shutter 1 Motor Module • U0285: Lost Communication with Active Grille Air Shutter 2 Motor Module • U1345: Engine Control Module LIN Bus 1P15FFBattery Monitor Sensor Signal Message Counter Incorrect • P16DC: Battery Sensor Monitor Timer Performance (DTC P16DC disables the Stop/ Start System) • P305D: DC/DC Converter CrankU0285Lost Communication with Active Grille Air Shutter 2 Motor Module • U1345: Engine Control Module LIN Bus 1 • U135A: Lost Communication with Shift to Park Range Actuator • U135E: LosC0040Customer Concern Not Duplicated (CCND) Customer states steering noise / whine when turning at parking lot speeds at cold temperatures. Followed SI proceduresC0035Customer Concern Not Duplicated (CCND) Customer states steering noise / whine when turning at parking lot speeds at cold temperatures. Followed SI pP0D40Customer 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 duplicP0D4FCustomer 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 duplicService High VoltageService High VoltageAutomatic Collision Prep ReducedAutomatic Collision Prep ReducedLCDD Data Provisioning failedLCDD Data Provisioning failedSuper Cruise UnavailableSuper Cruise UnavailableForward Collision System ReducedForward Collision System ReducedU1962Correction: 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 PowerU2BFFloss of isolationU3006to-Bumper coverage (Canada Base WarraU1616to-Bumper coverage (Canada Base Warranty coverage), use the fU0411to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section ofU053Bto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of InvestigateU1624to-Bumper covU3000to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. ReferenceU1615to-Bumper coverage (Canada Base Warranty coverageU1617to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the ApplicabU0140to-Bumper coverage (Canada Base Warranty coverage), use the following labor operationU0131to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable WarrantieU2231to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2224to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference theU2237to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU222Eto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) foU2225to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the ApplicU2226to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable WaU222Cto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle HiU222Fto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverU2232to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2228to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties sectiU2221to-Bumper coverage (Canada Base Warranty coverage), use the following labor opeU2230to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2229to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of IU222Bto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate VehU2222to-Bumper coverage (Canada Base Warranty coverage), use the following labor operationU222Dto-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (U2234to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2220to-Bumper coverage (Canada Base Warranty coverage), use the following laU222Ato-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of InvestigU2236to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2233to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2223to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. RefereU2235to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverageU2227to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable WarrantieP1E00Hybrid/Electric Vehicle Powertrain Control Module 2 Requested Malfunction Indicator Lamp Illumination Cause GM Engineering is attempting to determine the root cause of the above coP0534Air Conditioning Refrigerant Charge Low • P1E00 - Hybrid/Electric Vehicle Powertrain Control Module 2 Requested Malfunction Indicator Lamp Illumination Cause GM Engineering is atteU1666voltage 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 -> HighU2427voltage 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 -> HighU2BFCvoltage 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 -> HighU359Evoltage battery surge tank and document via photo. 3. Observe and record the BatteU2426voltage 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 -> HighU1667voltage 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 -> HighP0AA6voltage battery surge tank and document via photo. 3. Observe and record thP3029no MIL, type CP1C34voltage 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 -> HighU35B5voltage 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 -> HighP0AA7voltage battery surge tank and doU1639Contact General MoU1610ContaU2BF3Please have ready current session log including "Vehicle DTC and ID inforU2BF6Please have ready current session log including "Vehicle DTC and ID information.” ThisU0101up devices causing no power in 4WD low range. • Erratic electric power steering boost potentially associatU1862up devices causing no power in 4WD low range. • Erratic electric power steering boost potentially associated with codes U21U0100up devices causing no power in 4WD low range. • Erratic electric power steering boost potentially aU186Bup devices causing no power in 4WD low range. • Erratic electric power steering boost potentially associated withU3635U3620, U3622, U3624, U3626U2B82U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634, U3636U3639U3620, U3622, U3624, U3626, U3628, U362AU2B7AU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632U3631U3620, U3622U3637U3620, U3622, U3624, U3626, U3628U363FU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630U362FU3620U363BU3620, U3622, U3624, U3626, U3628, U362A, U362CU363DU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362EU2B86U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634, U3636, U3638U3633U3620, U3622, U3624U2B7EU3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634P0C78Added Chart and 2025 Model YearP0AE3Added Chart and 2025 Model YearB19C8Model: ModelB19C9Model: Model Year: VU023CCreated. 05/24/2023U023BCreatedB19DA16 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 OperationB1C64PIT6274B Published date: 01/8/2025 Preliminary IB1D7304 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 aU053CPage 2 March, 2025 Bulletin No.: 25-NA-060 GM bulletins are intended for use by professionalU2A90In some cases, these DTC's will not be set. Cause This condition may be caused if the VIN or mileage faiU1978If the above items do not correct the concern, thU197EIn some cases, these DTC's will not be set. Cause This condition may be caused if the VINU2A91In some cases, these DTC's will not be set. Cause This condition may be caused if the VIN or mileage fails to wU1973In some cases, these DTC's will not be set. Cause This condition may be caused if tU197FIf DTC U1978 is set, then reprogramming the IPC wilB1C48Correction Do not replace any parts at this time. EngineeringB020ACorrection Do not replace any parts at this tiB1A1BNA-085 or 25-NA-183 please update the radio it should correct the issue, ifB1596If customer concern is related to one of the symptoms below, vU0142If customer concern is related to one of the symptoms below, verify custU164BIf customer concern is related to one of the symptoms below, verify customers radio isU1516NA-085 or 25-NA-183 please update the radio it should correct the issue, if the vehicleU0265If customer concern is related to one of the symptoms below, verify customers rB1A1FNA-085 or 25-NA-183 please update the radio it should correct theU164E: If symptom is related to a phone issue, please also make sure the customers phone is fully uU11FDCreated On 12/12/2025 - Updated Labor Time 01/12/2026 - Updated DTC listU164FCreated On 12/12/2025 - Updated Labor Time 01/12/2026 - Updated DTC listU300316 (or similar). • If any low-voltage DTCs are active or recurring: - Do not replace the front camera. - Correct the 12 V power issue usingU1126- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684P056216 (or similar). • If any low-voltage DTCs are active or recurring: - Do not replace the front camera. - Correct the 12 V power isU1127- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684. - If aU0235- Do not replace the front camera. - Diagnose the CAN Bus 8 issue using SI 5199684. - If a moduleU1611If the entire bus is impacted (multiple ECUs with comm loss). • Do not replace the front camera. • DiagnoseU1643If the entire bus is impacted (multiple ECUs with comm loss). • Do not replace the front camera. • Diagnose the CAU223Ctest the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector bodyU223Btest the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector body. If theU197AEthernet Time Synchronization Signal Invalid (set by B174W ). − U0499 – Invalid Data Received from Telematics Control Platform Module (seB1A05Follow SI 6656059 for this condition. If SI directs replacement of B174WP1EE645-001 Diagnostic Information for Intermittent 110B1AAEPassive Entry Closure 2 Antenna Circuit High - Circuit Open
Accepted Research Accepted research
These curated research findings are useful for discovery but are not yet treated as verified canonical diagnostics.
B0126 SYM82LYRIQ (2023–2024): Bulletin context: non-clearable code in the image processing module. It may be related to the driver-monitoring camera or its connection.
B1599 SYM13LYRIQ (2023–2024): Bulletin context: non-clearable code in the image processing module. It may be related to the driver-monitoring camera or its connection.
B1DD0 SYM57LYRIQ (2023–2024): Bulletin context: non-clearable code in the image processing module. It may be related to the driver-monitoring camera or its connection.
P0AA6LYRIQ (2023–2025): Bulletin context: code requiring a safety evaluation for possible loss of isolation in the high-voltage battery.
P2980LYRIQ (2023 AWD; 2024): Bulletin context: HV service/charging unavailable warning. It may be related to BECM software.
Reference Brand reference codes
Openly licensed reference definitions are discovery data, not proof of applicability to a particular Cadillac EV.
P1031HO2S Heater Current Monitor Control Circuit Sensors 1
P1032HO2S Heater Warm Up Control Circuit Sensors 1
P1105Secondary Vacuum Sensor Circuit
P1106MAP Sensor Circuit Intermittent High Voltage
P1107MAP Sensor Circuit Intermittent Low Voltage
P1108BARO To MAP Sensor Circuit Comparison Too High
P1109Secondary Port Throttle System
P1111Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
P1112Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage
P1113Intake Resonance Switchover Valve Circuit
P1114Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage
P1115Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage
P1116ECT Signal Unstable Or Intermittent
P1117Engine Coolant Temp Signal Out-Of-Range Low
P1118Engine Coolant Temp Signal Out-Of Range High
P1119ECT Signal Out Of Rage With TFT Sensor
P1120Throttle Position (TP) Sensor 1 Circuit
P1121TP Sensor Circuit Intermittent High Voltage
P1122TP Sensor Circuit Intermittent Low Voltage
P1125Accelerator Pedal Position (APP) System
P1130HO2S Circuit Low Variance Bank 1 Sensor 1
P1131HO2S Circuit Low Variance Bank 1 Sensor 2
P1132H02S Circuit Low Variance Bank 2 Sensor 1
P1133HO2S Insufficient Switching
P1134HO2S Transition Time Ratio
P1135HO2S Lean Average Bank 1 Sensor 1
P1136HO2S Rich Average Bank 1 Sensor 1
P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage
P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage
P1139HO2S Insufficient Switching Bank 1 Sensor 2
P1140HO2S Transition Time Ratio Bank 1 Sensor 2
P1141HO2S Bank 1 Sensor 2 Average Voltage Level
P1143HO2S Bank 1 Sensor 3 Lean Or Low Voltage
P1144HO2S Bank 1 Sensor 3 Rich Or High Voltage
P1145HO2S Cross Counts Bank 1 Sensor 3
P1153HO2S Insufficient Switching
P1154HO2S Transition Time Ratio
P1155HO2S Lean Average Bank 2 Sensor 1
P1156HO2S Rich Average Bank 2 Sensor 1
P1157HO2S Bank 2 Sensor 2 Lean System Or Low Voltage
P1158HO2S Bank 2 Sensor 2 Rich Or High Voltage
P1159HO2S Cross Counts Bank 2 Sensor 2
P1161HO2S Heater Power Stage Circuit Bank 2 Sensor 2
P1163HO2S Bank 2 Sensor 3 Lean System Or Low Voltage
P1164HO2S Bank 2 Sensor 3 Rich Or High Voltage
P1165HO2S Cross Counts Bank 2 Sensor 2
P1170Bank To Bank Fuel Trim Offset
P1171Fuel System Lean During Acceleration
P1185Engine Oil Temperature Circuit
P1186EOT Circuit Performance
P1187EOT Sensor Circuit Low Voltage
P1188EOT Sensor Circuit High Voltage
P1189Engine Oil Pressure Switch Circuit
P1190Engine Vacuum Leak
P1191Intake Air Duct Air Leak
P1200Injector Control Circuit
P1201(Alternative Fuel) Gas Mass Sensor Circuit Range/Performance
P1202(Alternative Fuel) Gas Mass Sensor Circuit Low Frequency
P1203(Alternative Fuel) Gas Mass Sensor Circuit High Frequency
P1211Mass Air Flow Circuit Intermittent High
P1212Mass Air Flow Circuit Intermittent Low
P1214Injection Pump Timing Offset
P1215Ground Fault Detection Indicated
P1216Fuel Solenoid Response Time Too Short
P1217Fuel Solenoid Response Time Too Long
P1218Injection Pump Calibration Circuit
P1219Throttle Position Sensor Reference Voltage
P1220Throttle Position (TP) Sensor 2 Circuit
P1221Throttle Position (TP) Sensor 1-2 Correlation
P1222Injector Control Circuit Intermittent
P1225Injector Circuit Cylinder 2 Intermittent
P1228Injector Circuit Cylinder 3 Intermittent
P1231Injector Circuit Cylinder 4 Intermittent
P1234Injector Circuit Cylinder 5 Intermittent
P1237Injector Circuit Cylinder 6 Intermittent
P1240Injector Circuit Cylinder 7 Intermittent
P1243Injector Circuit Cylinder 8 Intermittent
P1245Intake Plenum Switchover Valve
P1250Early Fuel Evaporation Heater Circuit
P1257Supercharger System Overboost
P1258Engine Coolant Overtemperature Protection Mode Active
P1260Last Test Failed SCC Or Theft Detected Vehicle Immobilized
P1270Accelerator Pedal Position Sensor A/D Converter Error
P1271APP Sensor 1-2 Performance
P1272Accelerator Pedal Position Sensor 2
P1273Accelerator Pedal Position Sensor 1
P1274Injectors Wired Incorrectly
P1275Accelerator Pedal Position (APP) Sensor 1 Circuit
P1276Accelerator Pedal Position (APP) Sensor 1 Performance
P1277Accelerator Pedal Position Sensor 1 Circuit Low Voltage
P1278Accelerator Pedal Position Sensor 1 Circuit High Voltage
P1280Accelerator Pedal Position (APP) Sensor 2 Circuit
P1281Accelerator Pedal Position (APP) Sensor 2 Performance
P1282Accelerator Pedal Position Sensor 2 Circuit Low Voltage
P1283Accelerator Pedal Position Sensor 2 Circuit High Voltage
P1285Accelerator Pedal Position (APP) Sensor 3 Circuit
P1286Accelerator Pedal Position (APP) Sensor 3 Performance
P1287Accelerator Pedal Position Sensor 3 Circuit Low Voltage
P1288Accelerator Pedal Position Sensor 3 Circuit High Voltage
P1300Ignitor Circuit