WJIECO JK21-5L239-AB PM Sensor DPF Diesel Particulate Filter Sensor for Ford Transit MK4 2.0 EcoBlue diesel. Cross reference Bosch OEM 0281007550. Plug-and-play, fixes DPF regeneration & particulate fault codes.

H2: JK21-5L239-AB PM Sensor Overview

The JK21-5L239-AB PM Sensor (Ford OE# JK21-5L239-AB, Bosch OEM# 0281007550) is an OEM-grade DPF PM Sensor engineered by WJIECO for Ford Transit MK4 2.0 EcoBlue diesel vehicles. Also known as soot sensor, this critical aftertreatment component mounts downstream of the Diesel Particulate Filter (DPF). It detects the concentration of fine particulate soot in exhaust gas leaving the DPF and transmits real-time particulate readings to the ECU. The ECU uses this signal to trigger, regulate and monitor DPF automatic regeneration, which is mandatory for modern diesel emissions compliance.

This JK21-5L239-AB PM Sensor is designed as a direct factory replacement for these applications: Ford Transit MK4, 2.0 EcoBlue Diesel.

If your diesel van triggers a persistent check engine light, DPF regeneration failure, forced limp mode, soot overload warning or particulate related diagnostic trouble codes, your factory PM Sensor is likely suffering from probe contamination, carbon soot fouling, signal drift or internal circuit aging damage. Replacing the defective original sensor with this direct-fit JK21-5L239-AB PM Sensor replacement part is a cost-effective solution to restore your diesel aftertreatment system.

H2: OEM-Grade Construction and Strict Factory Testing

Our replacement JK21-5L239-AB PM Sensor features a precision soot detection probe and reinforced anti-vibration internal circuit module. It is engineered to withstand extreme exhaust temperature, thermal cycling and strong vibration during highway cruising and heavy hauling conditions. The outer protective housing, wiring harness and multi-pin electrical plug connector are fully dimension-matched to Ford OEM and Bosch factory specifications, preventing wire cracking, water ingress and intermittent signal dropouts.

Every finished JK21-5L239-AB PM Sensor unit goes through high-temperature aging testing, soot signal calibration and waterproof sealing inspection before shipment. This quality check eliminates common flaws found in cheap generic sensors, such as unstable particulate readings, slow signal response and early premature failure under high soot loads.

H2: Exact Vehicle Compatibility & Interchange OE Numbers

This DPF downstream JK21-5L239-AB PM Sensor is a direct replacement for the below diesel models (Fitment reference from Amazon & eBay): Ford OE: JK21-5L239-AB Bosch OEM: 0281007550 Fitment List:

• Ford Transit MK4 2.0 EcoBlue Diesel

As a core component of modern diesel exhaust aftertreatment system, this JK21-5L239-AB PM Sensor allows the ECU to evaluate DPF filtration efficiency and manage regeneration cycles. A faulty PM Sensor will block DPF regeneration, trigger limp mode, cause DPF clogging and illuminate the check engine light. Common DTCs include P2452, P2453, P2454, P2463.

https://www.amazon.com/dp/B0F4XHFWFD

H2: Core Benefits of Upgrading to the JK21-5L239-AB PM Sensor

Replacing your malfunctioning factory DPF soot detector with our pre-calibrated WJIECO JK21-5L239-AB PM Sensor delivers noticeable reliability improvements and protects expensive diesel particulate filters. Unlike low-cost aftermarket sensors that repeatedly trigger fault codes due to poor calibration, our unit provides steady, accurate soot concentration data for the vehicle ECU.

Reliable sensor measurements enable the engine computer to execute normal DPF regeneration, avoid unplanned limp mode, reduce DPF soot buildup and keep your diesel van compliant with emissions regulations. After installation, you can clear particulate sensor related trouble codes and restore full engine power.

https://wjieco-autoparts.com/product/hc3z-5l239-d-pm-sensor

HC3Z-5L239-D PM Sensor Particulate Matter Compatible with Ford Super Duty 6.7L Powerstroke Diesel for 2017-2022 Ford Super Duty F250 F350 F450 F550 6.7L V8 Diesel 0281006766 0281006767

H2: Plug-and-Play Installation, No Dealer Programming Required

A key advantage of this JK21-5L239-AB PM Sensor is its true plug-and-play design built for compatible Ford Transit MK4 2.0 EcoBlue diesel vans. This replacement part requires no ECU reprogramming, manual calibration, wire cutting or complicated mechanical modifications.

Installation works well for both professional repair garages and DIY vehicle owners. Simply remove the old PM Sensor from the exhaust pipe after DPF, apply anti-seize compound on threads, align and screw in the new sensor, reconnect the factory wiring plug, then clear stored fault codes using an OBD diagnostic scanner. After a short normal driving cycle, the DPF aftertreatment system will return to stable operation without recurring warning alerts.

Every WJIECO JK21-5L239-AB PM Sensor passes complete functional testing before leaving our factory. If you need a durable, high-precision and affordable OEM replacement DPF PM Sensor matching Ford OE JK21-5L239-AB and Bosch OEM 0281007550 for your Ford Transit MK4 EcoBlue van, our JK21-5L239-AB PM Sensor is the ideal choice to restore your diesel exhaust aftertreatment system.

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