Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

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.

Electrical & Charging System P · Powertrain Clear all

Quick browse

Choose a vehicle system

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

Vehicle coverage

These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 1561–1584 of 1797

Most searched first

P2C44Battery Isolation/Voltage Stabilization Control Circuit PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C44 relates to battery isolation/voltage stabilization control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C45Battery Isolation/Voltage Stabilization Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C45 relates to battery isolation/voltage stabilization control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C46Battery Isolation/Voltage Stabilization Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C46 relates to battery isolation/voltage stabilization control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C47Battery Isolation/Voltage Stabilization Control Circuit IntermittentCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C47 relates to battery isolation/voltage stabilization control circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C82AIR System Pump Supply Voltage Circuit Bank 1Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2C82 relates to air system pump supply voltage circuit bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C85Hybrid/EV Battery Voltage External Isolation FaultCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C85 relates to hybrid/ev battery voltage external isolation fault. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C86Hybrid/EV Battery Voltage Internal Isolation WarningCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C86 relates to hybrid/ev battery voltage internal isolation warning. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C87Hybrid/EV Battery Voltage External Isolation WarningCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C87 relates to hybrid/ev battery voltage external isolation warning. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C88Hybrid/EV Battery Voltage System Isolation WarningCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C88 relates to hybrid/ev battery voltage system isolation warning. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C89Hybrid/EV Battery System Precharge Current Too HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C89 relates to hybrid/ev battery system precharge current too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C8AHybrid/EV Battery Interface Control Module A PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C8A relates to hybrid/ev battery interface control module a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C8BHybrid/EV Battery Interface Control Module B PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C8B relates to hybrid/ev battery interface control module b performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C92Hybrid/EV Battery Contactor Control Supply Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C92 relates to hybrid/ev battery contactor control supply circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C93Hybrid/EV Battery Contactor Control Supply Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C93 relates to hybrid/ev battery contactor control supply circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C94Hybrid/EV Battery Contactor Control Supply Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C94 relates to hybrid/ev battery contactor control supply circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C95Hybrid/EV Battery Contactor Control Supply Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C95 relates to hybrid/ev battery contactor control supply circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C96Hybrid/EV Battery Disable Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C96 relates to hybrid/ev battery disable circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C97Hybrid/EV Battery Disable Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C97 relates to hybrid/ev battery disable circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C98Hybrid/EV Battery Disable Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C98 relates to hybrid/ev battery disable circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB4Charge Air Cooler Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CB4 relates to charge air cooler coolant pump b supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC1Generator Voltage Sense Circuit BCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC1 relates to generator voltage sense circuit b. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC2Generator Voltage Sense Circuit B Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC2 relates to generator voltage sense circuit b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC3Generator Voltage Sense Circuit B LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC3 relates to generator voltage sense circuit b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC4Generator Voltage Sense Circuit B HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC4 relates to generator voltage sense circuit b high. Check the fault conditions and vehicle-specific procedure before replacing parts.