What Does P244C Mean?
The exhaust temperature on Bank 1 is insufficient to initiate or complete diesel particulate filter regeneration. This prevents proper DPF cleaning and will eventually lead to filter clogging.
Common Causes
30%
Excessive short trip driving preventing thermal buildup
25%
Failed exhaust temperature sensor providing incorrect readings
20%
Malfunctioning fuel injection during regeneration cycle
15%
Exhaust leaks cooling gases before DPF
10%
Failed glow plugs or intake heater preventing proper combustion temperature
Diagnostic Steps
1
Step 1: Monitor exhaust temperature sensors before and after DPF during operation
2
Step 2: Verify proper operation of fuel dosing system during regeneration attempt
3
Step 3: Inspect exhaust system for leaks upstream of DPF that could reduce temperature
4
Step 4: Test exhaust temperature sensor accuracy using infrared thermometer comparison
5
Step 5: Attempt manual regeneration under controlled highway driving conditions
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The exhaust temperature on Bank 1 is insufficient to initiate or complete diesel particulate filter regeneration. This prevents proper DPF cleaning and will eventually lead to filter clogging.
The most common cause of P244C (Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1) is: Excessive short trip driving preventing thermal buildup
Typical repair costs for P244C range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive temporarily but DPF will continue to load with soot, eventually causing severe restrictions, power loss, and potential engine derate.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P244C to identify the root cause.
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Quick Info
Category
Powertrain
System
Diesel Emissions System
Difficulty
Type
Generic (SAE)
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