• Check Engine Light illuminated
• Reduced engine performance
• Increased fuel consumption
• Faulty particulate filter pressure sensor
• Blocked or clogged diesel particulate filter
• Wiring issues such as shorts or open circuits
Particulate Filter: A device in diesel engines that captures soot and other particulates from the exhaust.
DPF: Diesel Particulate Filter, a component that reduces emissions from diesel engines.
• P2454
• P2456
Particulate Filter Pressure Sensor A Circuit High
This code means that a sensor in your car that checks the pressure in the exhaust system is reading too high. It's like if you have a balloon and you blow too much air into it, the pressure gets too high.
The P2455 code indicates that the engine control module (ECM) has detected a high voltage signal from the particulate filter pressure sensor, suggesting excessive pressure in the diesel particulate filter (DPF).
The particulate filter pressure sensor monitors the pressure difference across the diesel particulate filter to ensure it is functioning correctly. A high circuit signal indicates that the pressure is higher than expected, which could be due to a blockage or sensor malfunction.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Check the diesel particulate filter for blockages.
• Replace the particulate filter pressure sensor if faulty.
• Clean or replace the diesel particulate filter if clogged.
• Repair or replace damaged wiring or connectors.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 to $500
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regular maintenance of the exhaust system
• Use high-quality diesel fuel
• Avoid short trips that don't allow the DPF to regenerate
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid driving the vehicle for extended periods if performance is reduced.
Check with the vehicle manufacturer for warranty coverage on emissions components.
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 damage to the exhaust system.
Driving with a malfunctioning DPF can lead to increased emissions, which may not comply with environmental regulations.
• Engine running
• Vehicle at operating temperature
The particulate filter pressure sensor is typically located near the diesel particulate filter in the exhaust system.
Q: Can I drive with the P2455 code?
A: It's not recommended to drive for long periods with this code, as it can lead to further engine or exhaust system damage.
Q: How do I clear the P2455 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
