Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a special filter to catch dirty stuff from the engine's smoke. This code means that the filter on one side of the engine isn't working well.
The P2003 code indicates that the diesel particulate filter (DPF) on bank 2 is not reducing emissions as expected.
The diesel particulate filter (DPF) is designed to trap soot and other particulates from the exhaust gases. When the filter's efficiency falls below a certain threshold, the engine control module (ECM) triggers the P2003 code. This typically means the filter is clogged or not functioning properly.
• Check engine light is on
• Reduced engine performance
• Increased fuel consumption
• Clogged diesel particulate filter
• Faulty differential pressure sensor
• Exhaust leaks
DPF: Diesel Particulate Filter
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the diesel particulate filter for blockages.
• Check the differential pressure sensor for proper operation.
• Clean or replace the diesel particulate filter.
• Replace the differential pressure sensor if faulty.
• Repair any exhaust leaks.
• OBD-II scanner
• Wrench set
• Pressure gauge
$300 - $1500
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regularly inspect the DPF.
• Use high-quality diesel fuel.
• Perform regular maintenance checks.
Emission Control
• Avoid short trips that don't allow the DPF to regenerate.
• Consider using a DPF cleaner additive.
Check with your vehicle manufacturer for warranty coverage on emission components.
The P2003 code has been more prevalent in diesel vehicles due to stricter emission regulations.
Moderate – While not immediately dangerous, prolonged driving with this issue can lead to further engine damage.
Driving with a malfunctioning DPF may not comply with emission standards and can result in fines.
• Engine at operating temperature
• Vehicle driven under normal conditions
The diesel particulate filter is located in the exhaust system, typically near the engine.
Q: Can I drive with a P2003 code?
A: It's not recommended to drive for extended periods with this code as it can lead to further damage.
Q: How often should the DPF be cleaned?
A: It depends on driving conditions, but typically every 100,000 miles or as specified by the manufacturer.
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