68171189AA Diesel Exhaust Particulate Sensor Matter PM Sensor for 2014-2018 Dodge Ram 1500/2019 Ram 1500 Classic 3.0L V6 OE Replace OEM Replace 0281006402

68171189AA PM sensor

https://wjieco-autoparts.com/

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The WJIECO 68171189AA PM sensor is a precision-built diesel particulate matter (PM) sensor designed for 2014-2018 Ram 1500 and 2019 Ram 1500 Classic pickups with the 3.0L V6 EcoDiesel engine. Mounted in the exhaust stream, this sensor keeps a constant eye on soot levels inside the diesel particulate filter (DPF). It gives the engine control module (ECM) the accurate data it needs to trigger a regeneration cycle at the right time, so the filter stays clean and the truck keeps running at full power. When the sensor wears out, the EcoDiesel regeneration strategy goes blind, which is why replacing it early is far cheaper than replacing the DPF itself.

## Fitment and Compatibility

### Compatible Vehicles

– 2014-2018 Ram 1500 – 3.0L V6 EcoDiesel (GEN 2)
– 2019 Ram 1500 Classic – 3.0L V6 EcoDiesel (GEN 2)

This 68171189AA PM sensor is a direct, plug-and-play replacement for the factory unit. It bolts into the original mounting point and uses the factory electrical connector, so no cutting, splicing, or reprogramming is required. If your Ram 1500 is a gasoline or HEMI model, this part does not apply to your truck; it is built specifically for the 3.0L V6 diesel.

### Interchangeable Part Numbers

The WJIECO 68171189AA PM sensor cross-references these OEM and Bosch numbers:

– Mopar: 68250216AA, 68250216AB, 68250216AC, 68250216AD
– Bosch: 0281007482, 0281007480, 0281006402

Before you order, always check the OE number stamped on your original sensor to confirm it matches one of the numbers above.

## How the Diesel PM Sensor Works

### What It Measures

The PM sensor uses a small heated sensing element to estimate how much soot has accumulated inside the DPF. As the filter loads up with exhaust particulate, the sensor signal rises steadily. When the soot level reaches the programmed threshold, the ECM starts a regeneration cycle and burns the trapped soot away at high exhaust temperature, returning the filter to a clean state.

### Why Accurate Readings Matter

If this sensor fails or drifts out of calibration, the ECM receives bad soot data. The truck may regenerate too often, which wastes fuel and shortens DPF life, or it may delay regeneration until the filter clogs and the truck drops into limp mode. A fresh 68171189AA PM sensor restores normal regeneration timing, fuel economy, and driveability on the 3.0L EcoDiesel. Owners who put off the replacement often end up with a forced regen at the dealer, a clogged filter, or both.

## Signs Your PM Sensor Needs Replacement

Watch for these symptoms on a 2014-2018 Ram 1500 3.0L EcoDiesel:

– DPF-related warning messages or reduced power / limp mode
– Check engine light with soot or DPF efficiency codes (for example P2453, P2454)
– Regeneration cycles that run back to back or never complete
– Noticeably worse fuel economy on highway trips

If your truck is storing a diagnostic trouble code, look up the exact definition and the likely causes on the free code library at [OBD-Codes.com](https://www.obd-codes.com) before replacing parts.

## Installation Overview

1. Park the truck on level ground, let the exhaust cool, and locate the PM sensor on the DPF assembly.
2. Disconnect the electrical connector, then remove the old sensor with the correct socket.
3. Install the new WJIECO 68171189AA PM sensor into the same port and tighten it back to the original position.
4. Reconnect the connector, start the engine, and clear any stored codes with a scan tool.

Most owners finish the job in 20-30 minutes with basic hand tools, and the sensor does not need to be programmed after installation.

## Why Choose WJIECO

– Direct-fit replacement built to OEM specifications
– Sealed, heat-resistant housing tested for high exhaust temperatures
– Factory-matched connector and thread for a clean install
– Each unit is inspected before packing to reduce defect returns
– 12-month warranty and responsive after-sales support

For the 3.0L EcoDiesel owner, the WJIECO 68171189AA PM sensor is the reliable, cost-effective fix that keeps the DPF system regenerating on schedule and keeps the Ram 1500 out of the shop.