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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.

Check soon 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 5665–5688 of 6682

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P2BA6NOx Exceedance - SCR NOx Catalyst PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2BA6 relates to nox exceedance - scr nox catalyst performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BA7NOx Exceedence - Empty Reagent TankCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BA7 relates to nox exceedence - empty reagent tank. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BA8NOx Exceedence - Interruption of Reagent Dosing ActivityCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BA8 relates to nox exceedence - interruption of reagent dosing activity. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BA9NOx Exceedence - Insufficient Reagent QualityCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BA9 relates to nox exceedence - insufficient reagent quality. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BAANOx Exceedence - Low Reagent ConsumptionCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BAA relates to nox exceedence - low reagent consumption. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BABNOx Exceedence - Incorrect EGR FlowCheck soonEmissions System30–120 minutes for initial diagnosisP2BAB relates to nox exceedence - incorrect egr flow. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BACNOx Exceedence - Deactivation of EGRCheck soonEmissions System30–120 minutes for initial diagnosisP2BAC relates to nox exceedence - deactivation of egr. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BADNOx Exceedence - Root Cause UnknownCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BAD relates to nox exceedence - root cause unknown. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BAENOx Exceedence - NOx control monitoring systemCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BAE relates to nox exceedence - nox control monitoring system. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BAFNOx System Driver Inducement ActiveCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BAF relates to nox system driver inducement active. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB0Alternative Fuel Consumption Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2BB0 relates to alternative fuel consumption too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB1Alternative Fuel Consumption Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2BB1 relates to alternative fuel consumption too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB2Alternative Fuel Tank EmptyCheck soonFuel System30–120 minutes for initial diagnosisP2BB2 relates to alternative fuel tank empty. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB3Fuel Pump Secondary Circuit PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2BB3 relates to fuel pump secondary circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB4Engine Coolant Temperature Sensor 4 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB4 relates to engine coolant temperature sensor 4 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB5Engine Coolant Temperature Sensor 5 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB5 relates to engine coolant temperature sensor 5 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB6Engine Coolant Temperature Sensor 6 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB6 relates to engine coolant temperature sensor 6 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB7Engine Coolant Temperature Sensor 6 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB7 relates to engine coolant temperature sensor 6 circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB8Engine Coolant Temperature Sensor 6 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB8 relates to engine coolant temperature sensor 6 circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB9Engine Coolant Temperature Sensor 6 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB9 relates to engine coolant temperature sensor 6 circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BBAEngine Coolant Temperature Sensor 6 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2BBA relates to engine coolant temperature sensor 6 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BBBTurbocharger/Supercharger Bypass Valve A Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BBB relates to turbocharger/supercharger bypass valve a position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BBCTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BBC relates to turbocharger/supercharger bypass valve a position sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BBDTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BBD relates to turbocharger/supercharger bypass valve a position sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.