Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

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.

Urgent Clear all

Quick browse

Choose a vehicle system

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

FiltersSeverity · family

Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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

Vehicle coverage

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

Diagnostic codes

Showing 25–48 of 621

Most searched first

B003BSecond Row Right Frontal Stage 3 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB003B concerns second row right frontal stage 3 deployment control. Learn what this fault indicates and where to begin diagnosis.B0040Third Row Left Side Airbag Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0040 concerns third row left side airbag deployment control. Learn what this fault indicates and where to begin diagnosis.B0041Third Row Left Frontal Stage 1 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0041 concerns third row left frontal stage 1 deployment control. Learn what this fault indicates and where to begin diagnosis.B0042Third Row Left Frontal Stage 2 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0042 concerns third row left frontal stage 2 deployment control. Learn what this fault indicates and where to begin diagnosis.B0043Third Row Left Frontal Stage 3 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0043 concerns third row left frontal stage 3 deployment control. Learn what this fault indicates and where to begin diagnosis.B0048Third Row Right Side Airbag Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0048 concerns third row right side airbag deployment control. Learn what this fault indicates and where to begin diagnosis.B0049Third Row Right Frontal Stage 1 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0049 concerns third row right frontal stage 1 deployment control. Learn what this fault indicates and where to begin diagnosis.B004AThird Row Right Frontal Stage 2 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB004A concerns third row right frontal stage 2 deployment control. Learn what this fault indicates and where to begin diagnosis.B004BThird Row Right Frontal Stage 3 Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB004B concerns third row right frontal stage 3 deployment control. Learn what this fault indicates and where to begin diagnosis.B0070Driver Seat Belt Pretensioner A Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0070 concerns driver seat belt pretensioner a deployment control. Learn what this fault indicates and where to begin diagnosis.B0072Passenger Seat Belt Pretensioner A Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0072 concerns passenger seat belt pretensioner a deployment control. Learn what this fault indicates and where to begin diagnosis.B0073Second Row Left Seat Belt Pretensioner Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0073 concerns second row left seat belt pretensioner deployment control. Learn what this fault indicates and where to begin diagnosis.B0074Second Row Center Seat Belt Pretensioner Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0074 concerns second row center seat belt pretensioner deployment control. Learn what this fault indicates and where to begin diagnosis.B0075Second Row Right Seat Belt Pretensioner Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0075 concerns second row right seat belt pretensioner deployment control. Learn what this fault indicates and where to begin diagnosis.B0076Third Row Left Seat Belt Pretensioner Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0076 concerns third row left seat belt pretensioner deployment control. Learn what this fault indicates and where to begin diagnosis.B0077Third Row Center Seat Belt Pretensioner Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0077 concerns third row center seat belt pretensioner deployment control. Learn what this fault indicates and where to begin diagnosis.B0078Third Row Right Seat Belt Pretensioner Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0078 concerns third row right seat belt pretensioner deployment control. Learn what this fault indicates and where to begin diagnosis.B0079Driver Seat Belt Pretensioner B Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB0079 concerns driver seat belt pretensioner b deployment control. Learn what this fault indicates and where to begin diagnosis.B007APassenger Seat Belt Pretensioner B Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB007A concerns passenger seat belt pretensioner b deployment control. Learn what this fault indicates and where to begin diagnosis.B007BSecond Row Left Seat Belt Pretensioner B Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB007B concerns second row left seat belt pretensioner b deployment control. Learn what this fault indicates and where to begin diagnosis.B007CSecond Row Right Seat Belt Pretensioner B Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB007C concerns second row right seat belt pretensioner b deployment control. Learn what this fault indicates and where to begin diagnosis.B007DSecond Row Center Seat Belt Pretensioner B Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB007D concerns second row center seat belt pretensioner b deployment control. Learn what this fault indicates and where to begin diagnosis.B007EDriver Seat Belt Pretensioner C Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB007E concerns driver seat belt pretensioner c deployment control. Learn what this fault indicates and where to begin diagnosis.B007FPassenger Seat Belt Pretensioner C Deployment ControlUrgentBody & Restraints45–120 minutes for initial diagnosisB007F concerns passenger seat belt pretensioner c deployment control. Learn what this fault indicates and where to begin diagnosis.