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9,253 diagnostic guides

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Find codes by symptomChoose what you notice to search matching code guides.

Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 817–840 of 1223

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U05A4Particulate Matter Sensor Received Invalid Data From ECM/PCMCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05A4 concerns particulate matter sensor received invalid data from ecm/pcm. Learn what this fault indicates and where to begin diagnosis.U05A5Invalid Data Received From NH3 SensorCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05A5 concerns invalid data received from nh3 sensor. Learn what this fault indicates and where to begin diagnosis.U05A6Invalid Data Received from Reductant Heater Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05A6 concerns invalid data received from reductant heater control module. Learn what this fault indicates and where to begin diagnosis.U05A7Invalid Data Received From Safety Integration Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05A7 concerns invalid data received from safety integration control module. Learn what this fault indicates and where to begin diagnosis.U05A8Invalid Data Received From NOx Sensor CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05A8 concerns invalid data received from nox sensor c. Learn what this fault indicates and where to begin diagnosis.U05A9NOx Sensor C Received Invalid Data From ECM/PCMCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05A9 concerns nox sensor c received invalid data from ecm/pcm. Learn what this fault indicates and where to begin diagnosis.U05AAInvalid Data Received From Charge Air Cooler Coolant PumpCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05AA concerns invalid data received from charge air cooler coolant pump. Learn what this fault indicates and where to begin diagnosis.U05ABInvalid Data Received From Engine Disconnect ClutchCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05AB concerns invalid data received from engine disconnect clutch. Learn what this fault indicates and where to begin diagnosis.U05ACInvalid Data Received From Vehicle Thermal Management Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05AC concerns invalid data received from vehicle thermal management control module. Learn what this fault indicates and where to begin diagnosis.U05B2Invalid Data Received From Comfort and Convenience Display ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B2 concerns invalid data received from comfort and convenience display a. Learn what this fault indicates and where to begin diagnosis.U05B3Invalid Data Received From Comfort and Convenience Display BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B3 concerns invalid data received from comfort and convenience display b. Learn what this fault indicates and where to begin diagnosis.U05B4Invalid Data Received From Driver Monitoring System ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B4 concerns invalid data received from driver monitoring system module. Learn what this fault indicates and where to begin diagnosis.U05B5Invalid Data Received From Front Radar Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B5 concerns invalid data received from front radar module a. Learn what this fault indicates and where to begin diagnosis.U05B6Invalid Data Received From Front Radar Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B6 concerns invalid data received from front radar module b. Learn what this fault indicates and where to begin diagnosis.U05B7Invalid Data Received From Rear Radar Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B7 concerns invalid data received from rear radar module a. Learn what this fault indicates and where to begin diagnosis.U05B8Invalid Data Received From Rear Radar Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B8 concerns invalid data received from rear radar module b. Learn what this fault indicates and where to begin diagnosis.U05B9Invalid Data Received From Rear Radar Module CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05B9 concerns invalid data received from rear radar module c. Learn what this fault indicates and where to begin diagnosis.U05BAInvalid Data Received From Rear Radar Module DCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05BA concerns invalid data received from rear radar module d. Learn what this fault indicates and where to begin diagnosis.U05BDInvalid Data Received From Localization and Mapping ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05BD concerns invalid data received from localization and mapping module. Learn what this fault indicates and where to begin diagnosis.U05BEInvalid Data Received From Night Vision Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05BE concerns invalid data received from night vision control module. Learn what this fault indicates and where to begin diagnosis.U05BFInvalid Data Received From Trailer Backup Assist Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05BF concerns invalid data received from trailer backup assist control module. Learn what this fault indicates and where to begin diagnosis.U05C0Invalid Data Received From Interior Lighting Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU05C0 concerns invalid data received from interior lighting control module b. Learn what this fault indicates and where to begin diagnosis.U05C1Invalid Data Received From Active Radiator Air Flow Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU05C1 concerns invalid data received from active radiator air flow control module a. Learn what this fault indicates and where to begin diagnosis.U0600Lost Communication With Engine Oil Pressure Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0600 concerns lost communication with engine oil pressure sensor a. Learn what this fault indicates and where to begin diagnosis.