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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

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 8665–8688 of 9253

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U0603Lost Communication With Fuel Pressure Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0603 concerns lost communication with fuel pressure sensor a. Learn what this fault indicates and where to begin diagnosis.U0604Lost Communication With Fuel Pressure Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0604 concerns lost communication with fuel pressure sensor b. Learn what this fault indicates and where to begin diagnosis.U0605Lost communication With A/C Refrigerant Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0605 concerns lost communication with a/c refrigerant sensor a. Learn what this fault indicates and where to begin diagnosis.U0606Lost Communication With Throttle/Pedal Position Sensor/Switch ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0606 concerns lost communication with throttle/pedal position sensor/switch a. Learn what this fault indicates and where to begin diagnosis.U0607Lost Communication With Throttle/Pedal Position Sensor/Switch BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0607 concerns lost communication with throttle/pedal position sensor/switch b. Learn what this fault indicates and where to begin diagnosis.U0608Lost Communication With Throttle/Pedal Position Sensor/Switch CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0608 concerns lost communication with throttle/pedal position sensor/switch c. Learn what this fault indicates and where to begin diagnosis.U0609Lost Communication With Manifold Absolute Pressure/Barometric Pressure SensorCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0609 concerns lost communication with manifold absolute pressure/barometric pressure sensor. Learn what this fault indicates and where to begin diagnosis.U060ALost Communication With Manifold Absolute Pressure Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU060A concerns lost communication with manifold absolute pressure sensor b. Learn what this fault indicates and where to begin diagnosis.U060BLost Communication With Turbocharger/Supercharger Boost Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU060B concerns lost communication with turbocharger/supercharger boost sensor a. Learn what this fault indicates and where to begin diagnosis.U060CLost Communication With Turbocharger/Supercharger Boost Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU060C concerns lost communication with turbocharger/supercharger boost sensor b. Learn what this fault indicates and where to begin diagnosis.U060DLost Communication With Turbocharger/Supercharger Boost Sensor CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU060D concerns lost communication with turbocharger/supercharger boost sensor c. Learn what this fault indicates and where to begin diagnosis.U060ELost Communication With Crankcase Pressure SensorCheck soonNetwork & Communication45–120 minutes for initial diagnosisU060E concerns lost communication with crankcase pressure sensor. Learn what this fault indicates and where to begin diagnosis.U060FLost Communication With Mass or Volume Air Flow Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU060F concerns lost communication with mass or volume air flow sensor a. Learn what this fault indicates and where to begin diagnosis.U0610Lost Communication With Mass or Volume Air Flow Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0610 concerns lost communication with mass or volume air flow sensor b. Learn what this fault indicates and where to begin diagnosis.U0611Lost Communication With Intake Air Temperature Sensor 1 Bank 1Check soonNetwork & Communication45–120 minutes for initial diagnosisU0611 concerns lost communication with intake air temperature sensor 1 bank 1. Learn what this fault indicates and where to begin diagnosis.U0612Lost Communication With Intake Air Temperature Sensor 1 Bank 2Check soonNetwork & Communication45–120 minutes for initial diagnosisU0612 concerns lost communication with intake air temperature sensor 1 bank 2. Learn what this fault indicates and where to begin diagnosis.U0613Lost Communication With Intake Air Temperature Sensor 2 Bank 1Check soonNetwork & Communication45–120 minutes for initial diagnosisU0613 concerns lost communication with intake air temperature sensor 2 bank 1. Learn what this fault indicates and where to begin diagnosis.U0614Lost Communication With Intake Air Temperature Sensor 2 Bank 2Check soonNetwork & Communication45–120 minutes for initial diagnosisU0614 concerns lost communication with intake air temperature sensor 2 bank 2. Learn what this fault indicates and where to begin diagnosis.U0615Lost Communication With Engine Coolant Bypass Valve ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0615 concerns lost communication with engine coolant bypass valve a. Learn what this fault indicates and where to begin diagnosis.U0616Lost Communication With Engine Coolant Bypass Valve BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0616 concerns lost communication with engine coolant bypass valve b. Learn what this fault indicates and where to begin diagnosis.U0617Lost Communication With Engine Coolant Bypass Valve CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0617 concerns lost communication with engine coolant bypass valve c. Learn what this fault indicates and where to begin diagnosis.U0618Lost Communication With Engine Coolant Bypass Valve DCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0618 concerns lost communication with engine coolant bypass valve d. Learn what this fault indicates and where to begin diagnosis.U0619Lost Communication With Reductant Level Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0619 concerns lost communication with reductant level sensor a. Learn what this fault indicates and where to begin diagnosis.U061ALost Communication With Reductant Level Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU061A concerns lost communication with reductant level sensor b. Learn what this fault indicates and where to begin diagnosis.