Differential-pressure sensor
We check whether the reading is plausible at key-off, idle and increased engine speed.
DPF SENSOR & PRESSURE FAULTS
Is the DPF blocked — or is the reading wrong?
Measure the real restriction before paying for a clean or replacement.
MotorDoc Pro checks DPF pressure sensors, pipes and live readings at your location to separate a genuine blockage from a false report.
✓ Mobile service✓ Root-cause checks✓ Clear findings
FALSE DATA CREATES REAL PROBLEMS
The engine computer can only act on the pressure it is told.
A failed pressure sensor, damaged pipe or blocked pressure line can make a healthy DPF look restricted — or hide a genuine blockage.
We compare the electronic reading with the vehicle condition and, where appropriate, an independent pressure measurement. That gives a reliable basis for the next step.
WHAT WE SOLVE
Start with the problem you can see.
You do not need to know the correct technical name. Tell us what the car is doing and we work back to the cause.
Sensor pipes and hoses
Split, blocked, melted or incorrectly connected pipes can completely distort the reported pressure.
True DPF restriction
Actual backpressure is considered alongside soot estimates and regeneration history.
Fault after parts replacement
New parts may still need correct installation, wiring checks or system adaptation before the reading makes sense.
NO GUESSING. NO PARTS CANNON.
One visit. Three clear stages.
Read the pressure story
We review codes, live pressure, calculated soot load and regeneration history across the relevant conditions.
Check sensor and pipework
The sensor supply, response and physical pressure lines are inspected for false or missing information.
Confirm clean or repair
You learn whether the DPF needs cleaning, the pressure system needs repair or another fault is preventing regeneration.
ROOT CAUSE FIRST
Do not replace a DPF because one number says it is blocked.
A correct decision needs consistent readings and a physical understanding of the system. Proving the restriction can save the cost of an unnecessary clean or replacement filter.
- Pressure at key-off, idle and raised speed
- Sensor supply and signal response
- Pressure pipes and connections
- Soot load and regeneration history
REAL MOTORDOC CASE · KIA 1.7 CRDi
A failed sensor created a false blockage report.
The electronic pressure reading suggested a restricted filter, but proper testing showed that the DPF itself was not blocked. The sensor — not the filter — needed attention.
CLEAR PRICE FOR THE RIGHT WORK
Call for an accurate quote.
The correct price depends on the vehicle, the warning shown and what testing or work is actually required. Give us the registration and symptoms, and we will explain the sensible starting point.
RELATED HELP
Other MotorDoc Pro services.
PRESSURE SENSOR CODE OR DPF WARNING?
Prove the problem before paying for the solution.
Send the registration, postcode and any fault code or dashboard photo by WhatsApp, or call to discuss the vehicle and get an accurate quote.