What Does P244E Mean?
The exhaust temperature on bank 2 is too low to initiate or complete DPF regeneration. This prevents proper cleaning of the particulate filter and can lead to excessive soot accumulation.
Common Causes
40%
Faulty exhaust temperature sensor reading incorrectly low
25%
Insufficient post-injection fuel delivery during regeneration
20%
Exhaust leak upstream of DPF allowing cool air entry
15%
Failed diesel oxidation catalyst (DOC) not generating required heat
Diagnostic Steps
1
Step 1: Monitor bank 2 exhaust temperature sensor readings during attempted regeneration and compare to bank 1
2
Step 2: Test exhaust temperature sensor with resistance and voltage checks at various temperatures
3
Step 3: Inspect exhaust system for leaks between turbocharger and DPF using smoke test or visual inspection
4
Step 4: Verify fuel injector post-injection operation and fuel delivery rates
5
Step 5: Check diesel oxidation catalyst efficiency and condition
Estimated Repair Cost
$200 - $2,500
Parts + labor, varies by vehicle and location
The exhaust temperature on bank 2 is too low to initiate or complete DPF regeneration. This prevents proper cleaning of the particulate filter and can lead to excessive soot accumulation.
The most common cause of P244E (Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 2) is: Faulty exhaust temperature sensor reading incorrectly low
Typical repair costs for P244E range from $200 to $2,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience reduced power and fuel economy. Continued operation can lead to DPF clogging requiring expensive replacement.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P244E to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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