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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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All severities9253 Low priority305 Check soon8256 Urgent621

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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 1729–1752 of 7353

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P0776Pressure Control Solenoid B Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP0776 relates to pressure control solenoid b performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P0777Pressure Control Solenoid B Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP0777 relates to pressure control solenoid b stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P0778Pressure Control Solenoid B ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP0778 relates to pressure control solenoid b electrical. Check the fault conditions and vehicle-specific procedure before replacing parts.P0779Pressure Control Solenoid B IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP0779 relates to pressure control solenoid b intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P077AOutput Shaft Speed Sensor Circuit - Loss of Direction SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077A relates to output shaft speed sensor circuit - loss of direction signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P077BOutput Shaft Speed Sensor Circuit - Direction ErrorCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077B relates to output shaft speed sensor circuit - direction error. Check the fault conditions and vehicle-specific procedure before replacing parts.P077COutput Shaft Speed Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077C relates to output shaft speed sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P077DOutput Shaft Speed Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077D relates to output shaft speed sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P077ETransmission Fluid Temperature Measurement System - Multiple Sensor CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP077E relates to transmission fluid temperature measurement system - multiple sensor correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P077FReverse 2 Incorrect RatioCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077F relates to reverse 2 incorrect ratio. Check the fault conditions and vehicle-specific procedure before replacing parts.P0780Shift ErrorCheck soonTransmission Issues30–120 minutes for initial diagnosisP0780 relates to shift error. Check the fault conditions and vehicle-specific procedure before replacing parts.P07811-2 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosisP0781 relates to 1-2 shift. Check the fault conditions and vehicle-specific procedure before replacing parts.P07822-3 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosisP0782 relates to 2-3 shift. Check the fault conditions and vehicle-specific procedure before replacing parts.P07833-4 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosisP0783 relates to 3-4 shift. Check the fault conditions and vehicle-specific procedure before replacing parts.P07844-5 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosisP0784 relates to 4-5 shift. Check the fault conditions and vehicle-specific procedure before replacing parts.P0785Shift Timing Solenoid ACheck soonTransmission Issues30–120 minutes for initial diagnosisP0785 relates to shift timing solenoid a. Check the fault conditions and vehicle-specific procedure before replacing parts.P0786Shift Timing Solenoid A Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP0786 relates to shift timing solenoid a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0787Shift Timing Solenoid A LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP0787 relates to shift timing solenoid a low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0788Shift Timing Solenoid A HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP0788 relates to shift timing solenoid a high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0789Shift Timing Solenoid A IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP0789 relates to shift timing solenoid a intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P078AShift Timing Solenoid BCheck soonTransmission Issues30–120 minutes for initial diagnosisP078A relates to shift timing solenoid b. Check the fault conditions and vehicle-specific procedure before replacing parts.P078BShift Timing Solenoid B Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP078B relates to shift timing solenoid b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P078CShift Timing Solenoid B LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP078C relates to shift timing solenoid b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P078DShift Timing Solenoid B HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP078D relates to shift timing solenoid b high. Check the fault conditions and vehicle-specific procedure before replacing parts.