Which sensor is B depends on the maker. Ford's 2013 6.7 L Power Stroke has an exhaust pressure sensor ahead of the filter as A and a two-port differential sensor across it as B. Despite its circuit title, P245E is there an offset test during after-run, with the key off and the controller still awake: since no gas flows, the differential reading should be zero, and more than 1 kPa for one second sets the code. On Ford's 2024 gasoline particulate filters with digital SENT sensors, P245E is the general circuit fault, detected within 5 s, while lost communication with the same sensor is U0602. So a sensor that drifted, a hose still holding pressure or water inside the sensor can set it as easily as a wiring fault. Low and high signals have their own codes, P2460 and P2461, and erratic signals P2462.
Medium severity. Can I keep driving?If the light is on steadily, take a highway drive or go to a repair shop soon. If the car is in limp mode or the light is flashing, do not push the engine.
Symptoms
- Malfunction indicator lamp on
- Soot load estimate unreliable, regeneration timing affected
Most likely causes
- Sensor B offset drifted or moisture inside the sensor
- Pressure hose kinked or blocked so pressure is trapped
- Wiring or connector fault on the sensor B circuit
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It affects emissions.
What each character of P245E means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 4: Emissions
- 5E: Specific fault in that system
Frequently asked questions
Can I keep driving with code P245E?
If the light is on steadily, take a highway drive or go to a repair shop soon. If the car is in limp mode or the light is flashing, do not push the engine.
What causes code P245E?
The most common causes are: sensor B offset drifted or moisture inside the sensor; pressure hose kinked or blocked so pressure is trapped; wiring or connector fault on the sensor B circuit.
Related codes
- P245FParticulate Filter Pressure Sensor B Circuit Range/Performance
- P2460Particulate Filter Pressure Sensor B Circuit Low
- P2461Particulate Filter Pressure Sensor B Circuit High
- P2462Particulate Filter Pressure Sensor B Circuit Intermittent/Erratic
- P2452Diesel Particulate Filter Pressure Sensor A Circuit
- P246DParticulate Filter Pressure Sensor A/B Correlation
Sources
- fordservicecontent.com: DOBDSM1301
- fordservicecontent.com: OBDSM2400OUTPUT 16Jul2024 WSM final V2 MCS7001
- law.cornell.edu: 13 CCR 1968.2
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.