P244F — Exhaust Temperature Too High For Particulate Filter Regeneration Bank 2

OBD2 code P244F flags a problem with the diesel particulate filter (DPF) (exhaust temperature too high for particulate filter regeneration bank 2). Short, gentle driving to a shop is usually possible. Common culprits: excessive ash loading (end of DPF life), faulty differential pressure or exhaust temperature sensor, soot-overloaded DPF from short-trip driving.

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive only enough to reach a service. A saturated DPF pushes the car into limp mode, and continued driving with failed regenerations dilutes engine oil with fuel — that damages the engine itself.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P244F is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the diesel particulate filter (DPF) for damage, corrosion, chafing or poor contact.
Subsystem check Read DPF soot load and differential pressure in live data before and after a forced regeneration.
Subsystem check Verify exhaust temperature and pressure sensor readings are plausible at idle and under load.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P244F does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P244F (parts and labor, USD, independent shop rates): DPF replacement: $1,500–$4,000; Forced regeneration / cleaning: $150–$400; Replace a pressure or temperature sensor: $150–$450. Overall, fixing P244F usually costs between $150 and $4,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Is it safe to drive with P244F?

Drive only enough to reach a service. A saturated DPF pushes the car into limp mode, and continued driving with failed regenerations dilutes engine oil with fuel — that damages the engine itself.

How do I diagnose P244F myself?

Start with a scan: confirm P244F, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the diesel particulate filter (DPF), and verify the suspect component against live data before buying parts.

What are the symptoms of P244F?

Drivers most often notice: loss of power and limp mode, rising oil level from fuel dilution, frequent regeneration attempts, increased fuel consumption.

Will P244F clear itself?

Sometimes P244F clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What is the most common cause of P244F?

The most common causes are: excessive ash loading (end of DPF life), faulty differential pressure or exhaust temperature sensor, soot-overloaded DPF from short-trip driving.

What does P244F mean?

P244F is logged by the onboard diagnostics when the diesel particulate filter (DPF) does not behave as expected. The official definition is “Exhaust Temperature Too High For Particulate Filter Regeneration Bank 2”. This is a powertrain (engine/transmission) category code.

“Bank 2” means the side of the engine opposite to cylinder 1. Verify which side that is on your specific engine before testing or replacing parts.

This code does not appear from a single bad reading: the module must see the fault condition repeat under defined operating conditions before it turns on the warning light. The freeze frame captured with P244F — engine load, rpm, temperature, speed — tells you exactly when the problem occurs, so reproduce those conditions when testing.

Common symptoms of P244F

loss of power and limp mode
rising oil level from fuel dilution
frequent regeneration attempts
increased fuel consumption
Check Engine or DPF warning light on

What causes P244F?

soot-overloaded DPF from short-trip driving
failed regeneration due to sensor or wiring faults
faulty differential pressure or exhaust temperature sensor
engine faults producing excess soot (EGR, injectors)

How to diagnose P244F

Connect an OBD2 scanner, confirm P244F is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Visually inspect the wiring harness and connectors related to the diesel particulate filter (DPF) for damage, corrosion, chafing or poor contact.
Read DPF soot load and differential pressure in live data before and after a forced regeneration.
Verify exhaust temperature and pressure sensor readings are plausible at idle and under load.
Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P244F does not return.

How to fix P244F

Start with the cheapest and most common causes before replacing expensive parts:

DPF replacement — $1,500–$4,000
Forced regeneration / cleaning — $150–$400
Replace a pressure or temperature sensor — $150–$450

How much does it cost to fix P244F?

Repair cost depends on which component actually failed. Typical scenarios for P244F (parts and labor, USD, independent shop rates):

DPF replacement: $1,500–$4,000
Forced regeneration / cleaning: $150–$400
Replace a pressure or temperature sensor: $150–$450

Overall, fixing P244F usually costs between $150 and $4,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P244F?