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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.

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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 5089–5112 of 7353

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P261CCoolant Pump B Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP261C relates to coolant pump b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P261DCoolant Pump B Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP261D relates to coolant pump b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P261ECoolant Pump B Control Circuit Stuck OnCheck soonEngine Problems30–120 minutes for initial diagnosisP261E relates to coolant pump b control circuit stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P261FCoolant Pump A Control Circuit Stuck OnCheck soonEngine Problems30–120 minutes for initial diagnosisP261F relates to coolant pump a control circuit stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P2620Throttle Position Output Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2620 relates to throttle position output circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2621Throttle Position Output Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2621 relates to throttle position output circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2622Throttle Position Output Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2622 relates to throttle position output circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2623Injector Control Pressure Regulator Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2623 relates to injector control pressure regulator circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2624Injector Control Pressure Regulator Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2624 relates to injector control pressure regulator circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2625Injector Control Pressure Regulator Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2625 relates to injector control pressure regulator circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2626O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2626 relates to o2 sensor pumping current trim circuit/open bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2627O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2627 relates to o2 sensor pumping current trim circuit low bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2628O2 Sensor Pumping Current Trim Circuit High Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2628 relates to o2 sensor pumping current trim circuit high bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2629O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2629 relates to o2 sensor pumping current trim circuit/open bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P262AFuel Injector - Pilot Injection Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP262A relates to fuel injector - pilot injection not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P262BControl Module Power Off Timer PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP262B relates to control module power off timer performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P262CSensor Reference Voltage G Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262C relates to sensor reference voltage g circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P262DSensor Reference Voltage G Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262D relates to sensor reference voltage g circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P262ESensor Reference Voltage G Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262E relates to sensor reference voltage g circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P262FSensor Reference Voltage G Circuit Range/PerfomanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262F relates to sensor reference voltage g circuit range/perfomance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2630O2 Sensor Pumping Current Trim Circuit Low Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2630 relates to o2 sensor pumping current trim circuit low bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2631O2 Sensor Pumping Current Trim Circuit High Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2631 relates to o2 sensor pumping current trim circuit high bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2632Fuel Pump B Control Circuit /OpenCheck soonFuel System30–120 minutes for initial diagnosisP2632 relates to fuel pump b control circuit /open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2633Fuel Pump B Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2633 relates to fuel pump b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.