Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the filter that cleans the car's exhaust isn't working right because it doesn't feel enough pressure. It's like when you blow air through a straw and it feels too easy.
The particulate filter in the exhaust system is not experiencing the expected pressure difference, which may indicate a problem with the filter or the sensors monitoring it.
The P244A code is triggered when the Engine Control Module (ECM) detects that the differential pressure across the Diesel Particulate Filter (DPF) is lower than expected. This can be due to a malfunctioning pressure sensor, a leak in the exhaust system, or an issue with the DPF itself.
• Check Engine Light is on
• Reduced engine performance
• Increased fuel consumption
• Faulty differential pressure sensor
• Exhaust leak before or after the DPF
• Clogged or damaged DPF
DPF: Diesel Particulate Filter
ECM: Engine Control Module
• Check for additional codes and freeze frame data
• Inspect the differential pressure sensor and its wiring
• Examine the exhaust system for leaks
• Replace or repair the differential pressure sensor
• Fix any exhaust leaks
• Clean or replace the DPF if necessary
• OBD-II scanner
• Multimeter
• Exhaust leak detector
$200 - $1000
Moderate
• Ford F-Series
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain the exhaust system
• Use high-quality fuel to prevent DPF clogging
• Perform periodic DPF cleaning
Sensor Issue
• Avoid driving with this code active for long periods
• Consult a professional mechanic for diagnosis and repair
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been more common in diesel vehicles with DPF systems, especially as they age.
Moderate – It should be addressed soon to prevent further damage.
Ignoring emissions-related codes can lead to increased pollution and may not comply with local emissions regulations.
• Engine running at normal operating temperature
• Vehicle driven under various conditions
The differential pressure sensor is usually located near the DPF in the exhaust system.
Q: Can I drive with a P244A code?
A: It's not recommended to drive for long periods with this code as it can lead to more severe issues.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the exhaust system and using quality fuel can help prevent this issue.
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