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 system is taking too long to clean out the soot from the filter that catches pollution from the engine.
The P2458 code indicates that the diesel particulate filter (DPF) regeneration process is taking longer than expected.
The diesel particulate filter (DPF) is designed to capture and store exhaust soot in order to reduce emissions from diesel engines. Periodically, the DPF needs to be cleaned through a process called regeneration, where the soot is burned off. Code P2458 is triggered when the regeneration process takes longer than the manufacturer-specified time.
• Check Engine Light is on
• Reduced engine performance
• Increased fuel consumption
• Clogged diesel particulate filter
• Faulty exhaust temperature sensor
• Issues with the fuel injector or fuel system
DPF: Diesel Particulate Filter
Regeneration: The process of cleaning the DPF by burning off soot
• Check for other related codes
• Inspect the diesel particulate filter for blockages
• Test the exhaust temperature sensors
• Clean or replace the diesel particulate filter
• Replace faulty exhaust temperature sensor
• Repair or replace faulty fuel injectors
• OBD-II scanner
• Multimeter
• Mechanic's tool set
$300 to $1500
Moderate
• Ford F-250
• Chevrolet Silverado 2500
• Dodge Ram 2500
• Regularly drive the vehicle at highway speeds to allow for proper regeneration
• Use high-quality diesel fuel
• Perform regular maintenance checks
Engine Performance
• Avoid short trips that don't allow the engine to reach operating temperature
• Consider using a fuel additive designed to help with DPF cleaning
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
The P2458 code has become more common with the increased use of diesel particulate filters in modern diesel engines.
Moderate – Should be addressed soon to prevent further engine or filter damage.
Ignoring this code can lead to increased emissions and potential fines in regions with strict emissions laws.
• Vehicle should be at operating temperature
• Perform tests under normal driving conditions
The diesel particulate filter is located in the exhaust system, typically near the engine or under the vehicle.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced engine performance and potential damage to the diesel particulate filter.
Q: Can I drive with this code?
A: You can drive, but it's recommended to address the issue soon to avoid further problems.
Budget · Enhanced code reader
A wired color-screen reader with readiness hotkeys, live data, code definitions, and data logging.
Good for emissions-related codes because it exposes readiness monitors and live powertrain data.
View on Amazon
Specialty · Smoke machine
Helpful for finding EVAP and vacuum leaks that are hard to see with visual inspection alone.
Helpful for tracking down EVAP and vacuum leaks that can trigger emissions faults.
View on Amazon
Specialty · O2 sensor socket
Helpful when the code points toward exhaust or oxygen-sensor work and space is tight.
Useful when the diagnosis points toward oxygen-sensor removal or replacement.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.