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 filter in the car's exhaust system is clogged with too much soot, like a chimney getting blocked with ash. This is happening on the side of the engine called Bank 2.
The code P243F indicates that the diesel particulate filter (DPF) on Bank 2 of the engine is clogged with soot beyond acceptable limits, causing a restriction in the exhaust flow.
The diesel particulate filter is designed to capture and store soot from the exhaust gases. When the soot accumulation exceeds a certain threshold, it indicates that the filter is not regenerating properly, leading to increased backpressure and potential engine performance issues.
• Reduced engine performance
• Increased fuel consumption
• Check engine light on
• Frequent short trips preventing proper DPF regeneration
• Faulty exhaust gas recirculation (EGR) valve
• Defective pressure sensor
DPF: Diesel Particulate Filter
EGR: Exhaust Gas Recirculation
• Check for other related codes
• Inspect the DPF for physical damage
• Measure the backpressure in the exhaust system
• Perform a forced DPF regeneration
• Replace the DPF if damaged
• Repair or replace faulty sensors
• OBD-II scanner
• Pressure gauge
• Mechanic's tools for DPF removal
$500 - $2500
Difficult
• Ford F-Series
• Chevrolet Silverado
• Dodge Ram
• Regularly drive at highway speeds to allow DPF regeneration
• Use high-quality diesel fuel
• Keep up with regular vehicle maintenance
Exhaust System Issue
• Avoid short trips frequently
• Consider taking the vehicle on a highway drive periodically
• Consult a professional mechanic if the issue persists
Check with the vehicle manufacturer for warranty coverage on the DPF system.
This code has become more common with the introduction of stricter emissions standards and the widespread use of DPFs in diesel vehicles.
High – Ignoring this issue can lead to severe engine damage and increased emissions.
Driving with a clogged DPF can lead to excessive emissions, which may be illegal in certain areas and can cause safety issues.
• Engine at operating temperature
• Vehicle driven at highway speeds
The diesel particulate filter is located in the exhaust system, typically near the engine or under the vehicle.
Q: Can I drive with a P243F code?
A: It's not recommended to drive for an extended period with this code, as it can cause engine damage.
Q: How often should the DPF be cleaned?
A: The DPF should regenerate automatically during normal driving, but forced cleaning may be necessary if it becomes clogged.
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