P244C — Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1

P244C — Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1. A fault in the diesel particulate filter (DPF). Short, gentle driving to a shop is usually possible. Typical causes: engine faults producing excess soot (EGR, injectors), soot-overloaded DPF from short-trip driving, failed regeneration due to sensor or wiring faults.

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 P244C 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 P244C does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P244C (parts and labor, USD, independent shop rates): Replace a pressure or temperature sensor: $150–$450; DPF replacement: $1,500–$4,000; Forced regeneration / cleaning: $150–$400. Overall, fixing P244C 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

What is the most common cause of P244C?

The most common causes are: engine faults producing excess soot (EGR, injectors), soot-overloaded DPF from short-trip driving, failed regeneration due to sensor or wiring faults.

What does OBD2 code P244C mean?

How do I diagnose P244C myself?

Start with a scan: confirm P244C, 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.

Is it safe to drive with P244C?

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.

What are the symptoms of P244C?

Drivers most often notice: frequent regeneration attempts, rising oil level from fuel dilution, Check Engine or DPF warning light on, increased fuel consumption.

What does P244C mean?

Seeing P244C on your scanner? The control unit has caught the diesel particulate filter (DPF) operating outside its calibrated window. The formal description is “Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1”, and the code is grouped under powertrain (engine/transmission) faults.

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

To set P244C, the control module compares live readings of the diesel particulate filter (DPF) against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.

Common symptoms of P244C

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

What causes P244C?

excessive ash loading (end of DPF life)
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 P244C

Connect an OBD2 scanner, confirm P244C 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 P244C does not return.

How to fix P244C

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

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

How much does it cost to fix P244C?

Repair cost depends on which component actually failed. Typical scenarios for P244C (parts and labor, USD, independent shop rates):

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

Overall, fixing P244C 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 P244C?