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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

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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 2305–2328 of 9253

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P0717Input/Turbine Shaft Speed Sensor A Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0717 relates to input/turbine shaft speed sensor a circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P0718Input/Turbine Shaft Speed Sensor A Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0718 relates to input/turbine shaft speed sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0719Brake Switch B Circuit LowUrgentSensors & Electronics30–120 minutes for initial diagnosisP0719 relates to brake switch b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P071ATransmission Mode Switch A CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP071A relates to transmission mode switch a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P071BTransmission Mode Switch A Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP071B relates to transmission mode switch a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P071CTransmission Mode Switch A Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP071C relates to transmission mode switch a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P071DTransmission Mode Switch B CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP071D relates to transmission mode switch b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P071ETransmission Mode Switch B Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP071E relates to transmission mode switch b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P071FTransmission Mode Switch B Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP071F relates to transmission mode switch b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0720Output Speed Sensor Circuit MalfunctionTransmission IssuesFix P0720 transmission output speed sensor code. Learn how it affects shifting and the speedometer.P0721Output Speed Sensor Circuit Range/PerformanceUrgentTransmission Issues30–90 minutes for initial diagnosisP0721 means the output shaft speed signal does not agree with expected transmission or vehicle operation. Learn what to check before replacing parts.P0722Output Speed Sensor No SignalCheck soonTransmission Issues45–120 minutes for initial diagnosisP0722 means Output Speed Sensor No Signal. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0723Output Speed Sensor Circuit IntermittentUrgentTransmission Issues30–90 minutes for initial diagnosisP0723 means the transmission output speed signal drops out or changes unexpectedly. Learn what to check before replacing parts.P0724Brake Switch B Circuit HighCheck soonSensors & Electronics30–90 minutes for initial diagnosisP0724 indicates the brake-switch B input remains high or exceeds the expected electrical range. Learn what to inspect before replacing parts.P0726Engine Speed Input Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0726 relates to engine speed input circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0727Engine Speed Input Circuit No SignalCheck soonEngine Problems30–120 minutes for initial diagnosisP0727 relates to engine speed input circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P0728Engine Speed Input Circuit IntermittentCheck soonEngine Problems30–120 minutes for initial diagnosisP0728 relates to engine speed input circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0729Gear 6 Incorrect RatioCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0729 relates to gear 6 incorrect ratio. Check the fault conditions and vehicle-specific procedure before replacing parts.P072AStuck in NeutralCheck soonSensors & Electronics30–120 minutes for initial diagnosisP072A relates to stuck in neutral. Check the fault conditions and vehicle-specific procedure before replacing parts.P072BStuck In ReverseCheck soonSensors & Electronics30–120 minutes for initial diagnosisP072B relates to stuck in reverse. Check the fault conditions and vehicle-specific procedure before replacing parts.P072CStuck in Gear 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP072C relates to stuck in gear 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P072DStuck in Gear 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP072D relates to stuck in gear 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P072EStuck in Gear 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP072E relates to stuck in gear 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P072FStuck in Gear 4Check soonSensors & Electronics30–120 minutes for initial diagnosisP072F relates to stuck in gear 4. Check the fault conditions and vehicle-specific procedure before replacing parts.