P244D — Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1

P244D — Exhaust Temperature Too High 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), failed regeneration due to sensor or wiring faults, excessive ash loading (end of DPF life).

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

  1. Read the code and freeze frame Connect an OBD2 scanner, confirm P244D is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. 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.
  3. 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.
  4. Subsystem check Read DPF soot load and differential pressure in live data before and after a forced regeneration.
  5. Subsystem check Verify exhaust temperature and pressure sensor readings are plausible at idle and under load.
  6. Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P244D does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P244D (parts and labor, USD, independent shop rates): Forced regeneration / cleaning: $150–$400; Replace a pressure or temperature sensor: $150–$450; DPF replacement: $1,500–$4,000. Overall, fixing P244D 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 P244D?

The most common causes are: engine faults producing excess soot (EGR, injectors), failed regeneration due to sensor or wiring faults, excessive ash loading (end of DPF life).

How do I diagnose P244D myself?

Start with a scan: confirm P244D, 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.

Will P244D clear itself?

Sometimes P244D 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.

Is it safe to drive with P244D?

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 much does it cost to fix P244D?

Forced regeneration / cleaning — $150–$400; Replace a pressure or temperature sensor — $150–$450; DPF replacement — $1,500–$4,000. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

What does P244D mean?

P244D (Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1) is stored when self-diagnostics detect abnormal readings or behaviour of the diesel particulate filter (DPF). It belongs to the powertrain (engine/transmission) category.

“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.

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 P244D — engine load, rpm, temperature, speed — tells you exactly when the problem occurs, so reproduce those conditions when testing.

What causes P244D?

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

Common symptoms of P244D

  • 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

How to diagnose P244D

  1. Connect an OBD2 scanner, confirm P244D is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. 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.
  3. Visually inspect the wiring harness and connectors related to the diesel particulate filter (DPF) for damage, corrosion, chafing or poor contact.
  4. Read DPF soot load and differential pressure in live data before and after a forced regeneration.
  5. Verify exhaust temperature and pressure sensor readings are plausible at idle and under load.
  6. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P244D does not return.

How to fix P244D

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

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

How much does it cost to fix P244D?

Repair cost depends on which component actually failed. Typical scenarios for P244D (parts and labor, USD, independent shop rates):

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

Overall, fixing P244D 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 P244D?

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.

Related OBD2 codes