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Toyota U1412 Code – CAN Bus Airbag Module Timeout Limited Safe to drive : Toyota vehicles only Applies only to : Not applicable to : This explanation does NOT apply to other brands. Medium Severity level : When Does This Code Appear on the Vehicles U1412 occurs when airbag module communication times out. What This Code means on the Vehicles Toyota-specific CAN bus airbag module timeout warning. Why This is different from a generic OBD2 Code Standard OBD-II scanners cannot detect Toyota OEM module timeout. Common Situations That Trigger This Code Wiring harness damage; Module malfunction; CAN bus issue. What Will NOT Fix This Code Ignoring module timeout; Replacing unrelated components. How to Clear This Code on Vehicles Inspect wiring and module; clear via Techstream. Related Manufacturer Specific Codes Toyota U1410; Toyota U1411 Previous Next

Ford P2196 Code – O2 Sensor Stuck Rich Bank 1 Limited Safe to drive : Ford vehicles only Applies only to : Not applicable to : This explanation does NOT apply to Toyota, BMW, GM, VW, or other manufacturers. Medium Severity level : When Does This Code Appear on the Vehicles Ford P2196 is commonly associated with rich running conditions and poor fuel economy. What This Code means on the Vehicles On Ford vehicles, P2196 indicates the upstream oxygen sensor on Bank 1 is stuck rich. Why This is different from a generic OBD2 Code Ford fuel systems often cause rich readings without sensor failure. Common Situations That Trigger This Code Leaking injectors; High fuel pressure; Contaminated MAF sensor. What Will NOT Fix This Code Replacing catalytic converter; Replacing downstream sensors. How to Clear This Code on Vehicles Inspect fuel delivery, clean MAF, clear code. Related Manufacturer Specific Codes Ford P0172; Ford P2195 Previous Next

Audi U14D601 Code – Module Data Mismatch Limited Safe to drive : Audi vehicles only Applies only to : Not applicable to : This explanation does NOT apply to other manufacturers. Medium Severity level : When Does This Code Appear on the Vehicles Audi U14D601 triggers when module data mismatch is detected on CAN bus. What This Code means on the Vehicles Indicates mismatch between powertrain and gateway modules. Why This is different from a generic OBD2 Code Standard scanners cannot detect this module-specific fault. Common Situations That Trigger This Code Aftermarket device interference; Wiring faults; ECU update failure. What Will NOT Fix This Code Ignoring CAN communication errors; Replacing unrelated parts. How to Clear This Code on Vehicles Diagnose wiring, ECU firmware, and connections; clear code with OEM tool. Related Manufacturer Specific Codes Audi U14D600; Audi U14D602 Previous Next

Toyota P0A90 Code – Hybrid Inverter Internal Fault Limited Safe to drive : Toyota hybrid vehicles only Applies only to : Not applicable to : This explanation does NOT apply to non-hybrid Toyota or other brands. High Severity level : When Does This Code Appear on the Vehicles P0A90 occurs when hybrid inverter detects internal fault. What This Code means on the Vehicles Toyota-specific hybrid inverter malfunction detected. Why This is different from a generic OBD2 Code Generic OBD-II scanners cannot read inverter internal error codes. Common Situations That Trigger This Code Inverter overheating; Electrical fault; High mileage aging. What Will NOT Fix This Code Replacing unrelated sensors; Ignoring inverter codes. How to Clear This Code on Vehicles Inspect inverter; check connections; clear via Techstream. Related Manufacturer Specific Codes Toyota P0A91; Toyota P0A92 Previous Next

BMW 2A87 Code – VANOS Exhaust Solenoid Fault Limited Safe to drive : BMW vehicles only Applies only to : Not applicable to : This explanation does NOT apply to other manufacturers. Medium Severity level : When Does This Code Appear on the Vehicles BMW 2A87 triggers limp mode and power reduction. What This Code means on the Vehicles BMW 2A87 indicates VANOS exhaust solenoid malfunction. Why This is different from a generic OBD2 Code BMW-specific shadow code requiring brand-level diagnostics. Common Situations That Trigger This Code Oil sludge; VANOS solenoid failure. What Will NOT Fix This Code Replacing timing chain. How to Clear This Code on Vehicles Restore oil quality, replace VANOS solenoid, clear code. Related Manufacturer Specific Codes BMW 2A82; BMW P0015 Previous Next

Toyota P3190 Code – Poor Engine Power Limited Safe to drive : Toyota and Lexus hybrid vehicles only Applies only to : Not applicable to : This explanation does NOT apply to non-hybrid vehicles or other manufacturers. Medium Severity level : When Does This Code Appear on the Vehicles Toyota P3190 often appears when the vehicle struggles to start or stalls shortly after startup. What This Code means on the Vehicles On Toyota hybrids, P3190 indicates poor engine power output during startup. Why This is different from a generic OBD2 Code Toyota uses this code to detect engine performance issues that affect hybrid system operation. Common Situations That Trigger This Code Dirty throttle body; Faulty MAF sensor; Weak fuel delivery. What Will NOT Fix This Code Replacing hybrid battery; Replacing inverter. How to Clear This Code on Vehicles Clean throttle body, inspect airflow and fuel delivery, clear code after repair. Related Manufacturer Specific Codes Toyota P0A0F; Toyota P0100 Previous Next

Toyota U1402 Code – CAN Bus Timeout Limited Safe to drive : Toyota vehicles only Applies only to : Not applicable to : This explanation does NOT apply to other brands. Medium Severity level : When Does This Code Appear on the Vehicles Toyota U1402 occurs when CAN bus modules timeout on communication. What This Code means on the Vehicles Timeout between body control module and other modules, Toyota-specific. Why This is different from a generic OBD2 Code Generic OBD-II scanners cannot detect OEM module timeouts. Common Situations That Trigger This Code Wiring harness damage; BCM failure; Network congestion. What Will NOT Fix This Code Ignoring timeout; Replacing unrelated modules. How to Clear This Code on Vehicles Inspect wiring and BCM; clear via Techstream. Related Manufacturer Specific Codes Toyota U1400; Toyota U1401 Previous Next

VW U1401 Code – ABS/ESP Module Signal Unexpected Limited Safe to drive : VW vehicles only Applies only to : Not applicable to : This explanation does NOT apply to Audi, BMW, or other brands. Medium Severity level : When Does This Code Appear on the Vehicles VW U1401 often occurs after module replacement or coding changes. What This Code means on the Vehicles Gateway module reports unexpected ABS/ESP signals. Why This is different from a generic OBD2 Code Standard OBD-II cannot detect these sub-module communication codes. Common Situations That Trigger This Code Improper module coding; Wiring faults; ABS module failure. What Will NOT Fix This Code Replacing unrelated modules; Ignoring wiring faults. How to Clear This Code on Vehicles Verify coding, inspect wiring, clear via VCDS/OEM tool. Related Manufacturer Specific Codes VW U1400; VW U1402 Previous Next

Lexus P0A80 Code – Hybrid Battery Deterioration Limited Safe to drive : Lexus hybrid vehicles only Applies only to : Not applicable to : This explanation does NOT apply to non-hybrid vehicles or other manufacturers. High Severity level : When Does This Code Appear on the Vehicles Lexus P0A80 appears when the hybrid system detects battery deterioration. What This Code means on the Vehicles On Lexus hybrids, P0A80 indicates the hybrid battery pack has degraded. Why This is different from a generic OBD2 Code Lexus hybrid systems use stricter battery health thresholds than non-luxury models. Common Situations That Trigger This Code Aging battery modules; High mileage hybrids. What Will NOT Fix This Code Replacing inverter; Replacing 12V battery. How to Clear This Code on Vehicles Perform battery health diagnostics and replace affected modules or pack. Related Manufacturer Specific Codes Lexus P3011; Lexus P0A7F Previous Next

GM U1100 Code – Module Gateway Sync Lost Limited Safe to drive : GM vehicles only Applies only to : Not applicable to : This explanation does NOT apply to other brands. Medium Severity level : When Does This Code Appear on the Vehicles GM U1100 shows when a module loses sync with the gateway. What This Code means on the Vehicles Module unable to communicate properly with gateway module. Why This is different from a generic OBD2 Code Generic OBD-II cannot detect gateway-specific sync issues. Common Situations That Trigger This Code Gateway module failure; Wiring harness issues; Aftermarket devices. What Will NOT Fix This Code Replacing unrelated modules. How to Clear This Code on Vehicles Diagnose module sync, wiring, and gateway; clear via Tech2/OEM. Related Manufacturer Specific Codes GM U1101; GM U1102 Previous Next

GM U1101 Code – BCM to TCM Communication Fault Limited Safe to drive : GM vehicles only Applies only to : Not applicable to : This explanation does NOT apply to other manufacturers. Medium Severity level : When Does This Code Appear on the Vehicles GM U1101 appears when BCM fails to acknowledge TCM commands. What This Code means on the Vehicles Communication failure between BCM and TCM modules. Why This is different from a generic OBD2 Code Standard scanners cannot report BCM–TCM-specific codes. Common Situations That Trigger This Code Wiring harness damage; BCM failure; TCM firmware mismatch. What Will NOT Fix This Code Clearing codes without repairing communication lines. How to Clear This Code on Vehicles Inspect wiring, BCM, TCM; clear via Tech2/OEM tool. Related Manufacturer Specific Codes GM U1100; GM U1102 Previous Next