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.

Check soon 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 7057–7080 of 8256

Most searched first

U015DLost Communication With Automated Driving System Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU015D concerns lost communication with automated driving system control module b. Learn what this fault indicates and where to begin diagnosis.U015ELost Communication With Automated Driving System Interface Module “A”Check soonNetwork & Communication45–120 minutes for initial diagnosisU015E concerns lost communication with automated driving system interface module “a”. Learn what this fault indicates and where to begin diagnosis.U015FLost Communication With Automated Driving System Interface Module “BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU015F concerns lost communication with automated driving system interface module “b. Learn what this fault indicates and where to begin diagnosis.U0160Lost Communication With Audible Alert Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0160 concerns lost communication with audible alert control module. Learn what this fault indicates and where to begin diagnosis.U0161Lost Communication With Compass ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0161 concerns lost communication with compass module. Learn what this fault indicates and where to begin diagnosis.U0162Lost Communication With Navigation Display ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0162 concerns lost communication with navigation display module. Learn what this fault indicates and where to begin diagnosis.U0163Lost Communication With Navigation Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0163 concerns lost communication with navigation control module. Learn what this fault indicates and where to begin diagnosis.U0164Lost Communication With HVAC Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0164 concerns lost communication with hvac control module. Learn what this fault indicates and where to begin diagnosis.U0165Lost Communication With HVAC Control Module - RearCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0165 concerns lost communication with hvac control module - rear. Learn what this fault indicates and where to begin diagnosis.U0166Lost Communication With Auxiliary Heater Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0166 concerns lost communication with auxiliary heater control module. Learn what this fault indicates and where to begin diagnosis.U0167Lost Communication With Vehicle Immobilizer Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0167 concerns lost communication with vehicle immobilizer control module. Learn what this fault indicates and where to begin diagnosis.U0168Lost Communication With Vehicle Security Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0168 concerns lost communication with vehicle security control module. Learn what this fault indicates and where to begin diagnosis.U0169Lost Communication With Sunroof Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0169 concerns lost communication with sunroof control module. Learn what this fault indicates and where to begin diagnosis.U016ALost Communication With Global Positioning System ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU016A concerns lost communication with global positioning system module. Learn what this fault indicates and where to begin diagnosis.U016BLost Communication With A/C Compressor Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU016B concerns lost communication with a/c compressor control module. Learn what this fault indicates and where to begin diagnosis.U016CLost Communication With Fuel Pump Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU016C concerns lost communication with fuel pump control module b. Learn what this fault indicates and where to begin diagnosis.U016DLost Communication With Exhaust Gas Sensor Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU016D concerns lost communication with exhaust gas sensor module b. Learn what this fault indicates and where to begin diagnosis.U0170Lost Communication With Restraints System Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0170 concerns lost communication with restraints system sensor a. Learn what this fault indicates and where to begin diagnosis.U0171Lost Communication With Restraints System Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0171 concerns lost communication with restraints system sensor b. Learn what this fault indicates and where to begin diagnosis.U0172Lost Communication With Restraints System Sensor CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0172 concerns lost communication with restraints system sensor c. Learn what this fault indicates and where to begin diagnosis.U0173Lost Communication With Restraints System Sensor DCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0173 concerns lost communication with restraints system sensor d. Learn what this fault indicates and where to begin diagnosis.U0174Lost Communication With Restraints System Sensor ECheck soonNetwork & Communication45–120 minutes for initial diagnosisU0174 concerns lost communication with restraints system sensor e. Learn what this fault indicates and where to begin diagnosis.U0175Lost Communication With Restraints System Sensor FCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0175 concerns lost communication with restraints system sensor f. Learn what this fault indicates and where to begin diagnosis.U0176Lost Communication With Restraints System Sensor GCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0176 concerns lost communication with restraints system sensor g. Learn what this fault indicates and where to begin diagnosis.