Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's engine isn't running smoothly because it's not getting enough fuel.
The engine control module (ECM) has detected a misfire in one or more cylinders due to insufficient fuel supply.
P1585 indicates that the ECM has detected a misfire condition that is likely caused by low fuel levels or inadequate fuel pressure. This can result in incomplete combustion within the engine cylinders, leading to rough engine operation and potential damage over time.
• Engine runs rough
• Decreased fuel efficiency
• Check Engine Light is on
• Low fuel level in the tank
• Faulty fuel pump
• Clogged fuel filter
ECM: Engine Control Module
Misfire: When the fuel in an engine cylinder fails to ignite properly
• Check the fuel level in the tank.
• Inspect the fuel pump for proper operation.
• Examine the fuel filter for clogs or restrictions.
• Refuel the vehicle if the tank is low.
• Replace the fuel pump if it's faulty.
• Change the fuel filter if it's clogged.
• Fuel pressure gauge
• OBD-II scanner
• Wrench set
$100 - $500
Moderate
• Ford Focus
• Toyota Camry
• Honda Accord
• Keep the fuel tank at least a quarter full.
• Regularly replace the fuel filter.
• Maintain the fuel system as per the manufacturer's schedule.
Engine Performance
• Refuel promptly when low fuel warning lights up.
• Schedule regular maintenance checks for the fuel system.
Check with your vehicle manufacturer for specific warranty coverage on fuel system components.
This code has been associated with vehicles that frequently run on low fuel, leading to increased wear on the fuel pump.
Moderate – Addressing this issue promptly can prevent further engine damage.
Driving with a misfire can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Low fuel level
The fuel pump is usually located inside the fuel tank, while the fuel filter can be found along the fuel line.
Q: Can I drive with a P1585 code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine damage.
Q: Will refueling clear the P1585 code?
A: Refueling may help if the issue was caused by low fuel, but further diagnosis is needed to ensure there are no other problems.
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Network faults often require full-system access instead of a generic code reader alone.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.