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 thinks the filter that cleans the exhaust is being cleaned too often on one side of the engine.
The particulate filter is a device in diesel engines that captures soot from the exhaust. Regeneration is the process of burning off the soot. This code indicates that the regeneration process is happening more frequently than expected on the second bank of cylinders.
The P243C code is triggered when the Engine Control Module (ECM) detects that the Diesel Particulate Filter (DPF) regeneration process is occurring more frequently than normal on Bank 2. This can be due to excessive soot accumulation or a malfunction in the regeneration system.
• Check Engine Light is on
• Decreased fuel efficiency
• Reduced engine performance
• Excessive soot buildup in the DPF
• Faulty DPF pressure sensor
• Malfunctioning exhaust gas recirculation (EGR) system
DPF: Diesel Particulate Filter
ECM: Engine Control Module
EGR: Exhaust Gas Recirculation
• Check for other related codes and address them first.
• Inspect the DPF for excessive soot buildup.
• Test the DPF pressure sensor for proper operation.
• Clean or replace the DPF if necessary.
• Replace the DPF pressure sensor if faulty.
• Repair or replace the EGR system if it's malfunctioning.
• OBD-II scanner
• Multimeter
• Pressure gauge
$500 - $2000
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regularly check and maintain the DPF system.
• Use high-quality diesel fuel.
• Avoid frequent short trips that prevent proper regeneration.
Exhaust System Issue
• Avoid driving with the Check Engine Light on for extended periods.
• Consult a professional mechanic for accurate diagnosis.
• Consider a DPF cleaning service if recommended.
Check with your vehicle manufacturer for any applicable emissions warranty coverage.
This code has become more common with the increased use of diesel particulate filters in modern diesel engines.
Moderate – It should be addressed soon to prevent further engine or exhaust system damage.
Ignoring this code can lead to increased emissions and possible fines in areas with strict emissions regulations.
• Engine at operating temperature
• Vehicle driven under normal 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 the P243C code?
A: Ignoring the code can lead to reduced engine performance and increased emissions, potentially causing further damage.
Q: Can I drive my car with a P243C code?
A: While you can drive with this code, it's best to address it soon to avoid potential damage and maintain performance.
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