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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.

Engine Problems P · Powertrain Clear all

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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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Diagnostic codes

Showing 553–576 of 1049

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P26F4Coolant Pump C Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP26F4 relates to coolant pump c control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F5Coolant Pump C Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP26F5 relates to coolant pump c control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F6Coolant Pump C Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP26F6 relates to coolant pump c control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F8Coolant Pump C Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP26F8 relates to coolant pump c stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F9Coolant Pump C Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP26F9 relates to coolant pump c control module overtemperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P26FACoolant Pump C Overspeed/Air in SystemUrgentEngine Problems30–120 minutes for initial diagnosisP26FA relates to coolant pump c overspeed/air in system. Check the fault conditions and vehicle-specific procedure before replacing parts.P2890Cylinder 1 Ion Current Sense CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2890 relates to cylinder 1 ion current sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2891Cylinder 1 Ion Current Sense Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2891 relates to cylinder 1 ion current sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2892Cylinder 1 Ion Current Sense Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2892 relates to cylinder 1 ion current sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2893Cylinder 1 Ion Current Sense Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2893 relates to cylinder 1 ion current sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2894Cylinder 2 Ion Current Sense CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2894 relates to cylinder 2 ion current sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2895Cylinder 2 Ion Current Sense Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2895 relates to cylinder 2 ion current sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2896Cylinder 2 Ion Current Sense Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2896 relates to cylinder 2 ion current sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2897Cylinder 2 Ion Current Sense Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2897 relates to cylinder 2 ion current sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2898Cylinder 3 Ion Current Sense CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2898 relates to cylinder 3 ion current sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2899Cylinder 3 Ion Current Sense Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2899 relates to cylinder 3 ion current sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P289ACylinder 3 Ion Current Sense Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP289A relates to cylinder 3 ion current sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P289BCylinder 3 Ion Current Sense Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP289B relates to cylinder 3 ion current sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P289CCylinder 4 Ion Current Sense CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP289C relates to cylinder 4 ion current sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P289DCylinder 4 Ion Current Sense Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP289D relates to cylinder 4 ion current sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P289ECylinder 4 Ion Current Sense Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP289E relates to cylinder 4 ion current sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P289FCylinder 4 Ion Current Sense Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP289F relates to cylinder 4 ion current sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P28A0Cylinder 5 Ion Current Sense CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP28A0 relates to cylinder 5 ion current sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P28A1Cylinder 5 Ion Current Sense Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP28A1 relates to cylinder 5 ion current sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.