Guide step
Split hot restart from cold start
If long crank is worst after refueling or hot soak, a leaking purge valve moves much higher on the list than a random sensor guess.
Guide page
Long Crank Diagnostic Order Before Replacing Sensors
A practical way to separate cam/crank sync, purge flooding, and fuel-delivery delay when the engine eventually starts but takes too long to fire.
Guide step
Watch sync data while cranking
RPM signal, cam sync, and correlation status help separate crank sensor trouble from timing drift or a dead cam signal.
Guide step
Do not ignore timing noise
A long crank plus startup rattle deserves timing-system attention before you keep swapping electrical parts.
Connected paths
Related codes
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P0016 — Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)P0335 — Crankshaft Position Sensor A CircuitP0340 — Camshaft Position Sensor CircuitP0441 — Evaporative Emission Control System Incorrect Purge FlowP0496 — Evaporative Emission System High Purge FlowP0017 — Crankshaft Position - Exhaust Camshaft Position Correlation (Bank 1 Sensor B)P0451 — Evaporative Emission Control System Pressure Sensor Range/PerformanceP0010 — A Camshaft Position Actuator Circuit / Open (Bank 1)P0013 — B Camshaft Position Actuator Circuit / Open (Bank 1)P0020 — A Camshaft Position Actuator Circuit / Open (Bank 2)P0022 — A Camshaft Position Timing Over-Retarded (Bank 2)P0023 — B Camshaft Position Actuator Circuit / Open (Bank 2)P0024 — B Camshaft Position Timing Over-Advanced or System Performance (Bank 2)P0230 — Fuel Pump Primary CircuitP0231 — Fuel Pump Secondary Circuit LowP023F — Fuel Pump Secondary Circuit/OpenP0627 — Fuel Pump A Control Circuit/OpenP0628 — Fuel Pump A Control Circuit LowP0686 — ECM/PCM Power Relay Control Circuit LowP0688 — ECM/PCM Power Relay Sense Circuit/OpenP0689 — ECM/PCM Power Relay Sense Circuit LowP0233 — Fuel Pump Secondary Circuit IntermittentP025A — Fuel Pump Module Control Circuit/OpenP025B — Fuel Pump Module Control Circuit Range/PerformanceP025C — Fuel Pump Module Control Circuit LowP025D — Fuel Pump Module Control Circuit High
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Related symptoms
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