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.

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 5065–5088 of 7353

Most searched first

P2604Intake Air Heater A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2604 relates to intake air heater a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2605Intake Air Heater B Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2605 relates to intake air heater b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2606Intake Air Heater B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2606 relates to intake air heater b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2607Intake Air Heater B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2607 relates to intake air heater b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2608Intake Air Heater B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2608 relates to intake air heater b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2609Intake Air Heater System PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2609 relates to intake air heater system performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P260APTO Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP260A relates to pto control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P260BPTO Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP260B relates to pto control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P260CPTO Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP260C relates to pto control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P260DPTO Engaged Lamp Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP260D relates to pto engaged lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P260EParticulate Filter Regeneration Lamp Control CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP260E relates to particulate filter regeneration lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P260FEVAP System Monitoring Processor PerformanceLow priorityEmissions System30–120 minutes for initial diagnosisP260F relates to evap system monitoring processor performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2610ECM/PCM Engine Off Timer PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2610 relates to ecm/pcm engine off timer performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2611A/C Refrigerant Distribution Valve A Control Circuit/OpenLow prioritySensors & Electronics30–120 minutes for initial diagnosisP2611 relates to a/c refrigerant distribution valve a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2612A/C Refrigerant Distribution Valve A Control Circuit LowLow prioritySensors & Electronics30–120 minutes for initial diagnosisP2612 relates to a/c refrigerant distribution valve a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2613A/C Refrigerant Distribution Valve A Control Circuit HighLow prioritySensors & Electronics30–120 minutes for initial diagnosisP2613 relates to a/c refrigerant distribution valve a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2614Camshaft A Position Signal Output Circuit/Open Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2614 relates to camshaft a position signal output circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2615Camshaft A Position Signal Output Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2615 relates to camshaft a position signal output circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2616Camshaft A Position Signal Output Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2616 relates to camshaft a position signal output circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2617Crankshaft Position Signal Output Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2617 relates to crankshaft position signal output circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2618Crankshaft Position Signal Output Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2618 relates to crankshaft position signal output circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2619Crankshaft Position Signal Output Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2619 relates to crankshaft position signal output circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P261ACoolant Pump B Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP261A relates to coolant pump b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P261BCoolant Pump B Control Circuit Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP261B relates to coolant pump b control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.