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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 1537–1560 of 1939

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P2747Intermediate Shaft Speed Sensor B Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2747 relates to intermediate shaft speed sensor b circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P2748Intermediate Shaft Speed Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2748 relates to intermediate shaft speed sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2749Intermediate Shaft Speed Sensor C CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2749 relates to intermediate shaft speed sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2750Intermediate Shaft Speed Sensor C Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2750 relates to intermediate shaft speed sensor c circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2751Intermediate Shaft Speed Sensor C Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2751 relates to intermediate shaft speed sensor c circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P2752Intermediate Shaft Speed Sensor C Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2752 relates to intermediate shaft speed sensor c circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2765Input/Turbine Shaft Speed Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2765 relates to input/turbine shaft speed sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2766Input/Turbine Shaft Speed Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2766 relates to input/turbine shaft speed sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2767Input/Turbine Shaft Speed Sensor B Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2767 relates to input/turbine shaft speed sensor b circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P2768Input/Turbine Shaft Speed Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2768 relates to input/turbine shaft speed sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2771Four Wheel Drive (4WD) Low Switch CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2771 relates to four wheel drive (4wd) low switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2772Four Wheel Drive (4WD) Low Switch Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2772 relates to four wheel drive (4wd) low switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2773Four Wheel Drive (4WD) Low Switch Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2773 relates to four wheel drive (4wd) low switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2774Four Wheel Drive (4WD) Low Switch Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2774 relates to four wheel drive (4wd) low switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2784Input/Turbine Speed Sensor A/B CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2784 relates to input/turbine speed sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P278AKick Down Switch CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP278A relates to kick down switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P278BKick Down Switch Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP278B relates to kick down switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P278CKick Down Switch Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP278C relates to kick down switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P278DKick Down Switch Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP278D relates to kick down switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P278EKick Down Switch Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP278E relates to kick down switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2790Gate Select Direction CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2790 relates to gate select direction circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2791Gate Select Direction Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2791 relates to gate select direction circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2792Gate Select Direction Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2792 relates to gate select direction circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P279DFour Wheel Drive (4WD) Range Signal CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP279D relates to four wheel drive (4wd) range signal circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.