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 computer has detected a problem with how fuel is being controlled in the engine. It's like if you had a water faucet that isn't letting enough water through when you turn it on.
The engine control module (ECM) has identified an issue with the fuel metering control system, specifically in the 'B' circuit, which is responsible for regulating the amount of fuel being delivered to the engine.
P0258 indicates that the fuel metering control circuit 'B' is experiencing low voltage or inadequate signal. This circuit is part of the injection pump system that controls the precise amount of fuel injected into the engine's combustion chambers. A low signal could result from electrical issues or mechanical failures in the injection pump or related components.
• Engine misfire
• Reduced engine performance
• Check Engine Light illuminated
• Faulty injection pump
• Wiring issues in the fuel metering control circuit
• Defective fuel pressure sensor
ECM: Engine Control Module
Injection Pump: A device that pressurizes fuel and delivers it to the engine's injectors.
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connections in the fuel metering control circuit.
• Test the fuel pressure sensor and injection pump for proper operation.
• Repair or replace damaged wiring in the circuit.
• Replace the faulty fuel pressure sensor.
• Repair or replace the injection pump if necessary.
• OBD-II scanner
• Multimeter
• Fuel pressure gauge
$200 - $1000
Moderate
• Ford F-Series
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance of the fuel system
• Ensure proper fuel quality
• Routine inspection of wiring and connectors
Engine Performance
• Avoid driving the vehicle until the issue is resolved.
• Consult with a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for warranty coverage on the fuel system components.
This code has been associated with fuel system issues in diesel engines, particularly in older models with mechanical injection pumps.
High – This issue can lead to engine performance problems and should be addressed promptly.
Driving with this code can lead to further engine damage and may not comply with emissions regulations.
• Engine running
• Under load conditions
The injection pump is typically located on the engine, connected to the fuel lines and controlled by the ECM.
Q: Can I drive with a P0258 code?
A: It's not recommended to drive with this code as it can lead to engine damage and poor performance.
Q: What happens if I ignore the P0258 code?
A: Ignoring this code can result in further engine damage and decreased fuel efficiency.
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Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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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.