OBD-II trouble code
P24A0: DPF Temperature Control
Application matters: This code concerns particulate-filter temperature control during regeneration. The temperature measurement, control command and response must be assessed together. Regeneration strategy and permitted service actions depend on the exact engine and current fault state.
The filter temperature-control check failed during regeneration. This finding does not establish actual temperature or prove that the controller, sensors or filter are healthy.
Quick facts
- System
- Powertrain
- Category
- Exhaust / Aftertreatment
- Severity
- High severity
- Driving guidance
- Depends on symptoms and vehicle guidance
- Repair cost range
- Get a vehicle-specific estimate after diagnosis.
- DIY difficulty
- Shop recommended
A code alone cannot establish whether driving is safe. Stop safely for a red brake or oil-pressure warning, overheating, severe misfire, stalling, or impaired braking or steering, and follow the owner's manual. Restraints faults can reduce crash protection even when the vehicle runs normally.
Browse every code in Powertrain, or start from the full code library.
What does P24A0 mean?
P24A0 identifies a problem controlling particulate-filter temperature. The cited Ford monitor runs during an active regeneration event. It reports a fault when the temperature controller reaches its upper or lower command limit while the difference between desired and actual temperature remains too large for the required period.
Reaching a command limit describes the control result; it does not establish why the target was missed. Temperature feedback, the installed heat-control path, engine and exhaust conditions, filter condition, and control-system faults may need assessment under the matched procedure. A control code does not clear the controller or filter, and it does not rule out a real temperature problem. Any engine-cooling or overheating warning still needs its own assessment.
The direction of the command and the conditions when the code set are useful evidence, but neither selects a repair by itself. A technician should compare the required command, feedback and response using the correct strategy for that engine. Do not assume that every system uses the same injection or exhaust hardware.
Regeneration creates high exhaust temperatures. Keep people and combustible material clear of hot exhaust, including after shutdown. A service regeneration is appropriate only when the vehicle procedure requires and permits it after the relevant faults, loading limits and safety prerequisites have been assessed. Equipment and ventilation alone do not make an unknown filter condition suitable for regeneration.
Possible causes
- A temperature-feedback or associated circuit fault identified by testing
- A fault in the installed regeneration heat-control path
- An engine, air-path or exhaust condition preventing the required response, where the procedure identifies it
- Filter condition affecting the permitted regeneration process
- A controller or calibration fault supported by the applicable diagnostic results
Symptoms
- A check-engine or aftertreatment warning with P24A0 recorded
- Additional temperature or regeneration faults
- A regeneration that does not complete as expected
- Reduced performance or other running symptoms if an associated fault affects operation
- No obvious running complaint despite the stored control fault
Diagnostic steps
Save the full scan report, code status, and available freeze-frame data before clearing anything. Confirm the reporting module, any failure-type suffix, and the procedure for the exact vehicle. The steps below are an overview; use manufacturer specifications and safety procedures for testing.
- 1.Preserve the full code set, status and freeze-frame data. Save commanded and measured temperature information and any command-limit indication available in the event record.
- 2.Check the actual warnings and symptoms before testing. Stop safely and obtain assistance for overheating, severe running trouble or unsafe loss of power; do not continue running to collect more data.
- 3.Have a qualified technician select the exact-engine temperature-control diagnostic path. Follow its code priorities and validate the required feedback and operating conditions without assuming a healthy sensor from this code.
- 4.Evaluate the installed heat-control, engine, exhaust and filter branches as directed by the results. Do not substitute a universal post-injection test or a fixed sensor-first parts order.
- 5.Use recorded operating history to assess any interrupted-regeneration concern. A report of short trips alone does not authorize regeneration or identify the failed part.
- 6.After the cause is established, perform only the repair, setup, regeneration or filter service that the matched procedure requires and permits. Confirm the repair using that procedure and retain the result.
Repair cost
Get a vehicle-specific estimate after diagnosis.
A trouble code alone does not price the repair. Ask the shop to identify the confirmed fault and itemize diagnosis, parts, labor, programming or calibration, and taxes.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with diesel particulate filter (dpf) cleaning / replacement, if diagnosed preselected. Adjust labor rate and vehicle category to fit your situation.
Related repairs
These links are planning examples; the code does not confirm that any listed part has failed.
DIY vs shop
A qualified shop is recommended because this can involve vehicle-specific emissions-system diagnosis and protected circuit or component tests, with pressure relief, exhaust cooling, fluid handling or setup when required by the installed system and confirmed repair. Ask the technician what testing confirmed the repair.