GC3A-5L239-AA PM Sensor | WJIECO DPF Particulate Matter Sensor for Ford Super Duty 6.7L Diesel

Meta Description: Shop the GC3A-5L239-AA PM Sensor from WJIECO. Direct replacement DPF particulate matter sensor for Ford F-250, F-350, F-450, F-550 Super Duty 6.7L diesel. Fix P24AE, U02A3 fault codes, restore DPF regeneration & engine power.

GC3A-5L239-AA PM Sensor is a critical DPF particulate matter sensor designed to monitor soot and particulate levels inside your Ford diesel exhaust aftertreatment system. The WJIECO GC3A-5L239-AA PM Sensor serves as a direct OEM replacement, built to match the original sensor specifications for Ford Super Duty 6.7L diesel trucks. If your dash shows a check engine light, DPF regen failure or engine derate, replacing the faulty GC3A-5L239-AA PM Sensor is often the reliable fix.

What Is GC3A-5L239-AA PM Sensor?

The GC3A-5L239-AA PM Sensor, also known as a DPF soot particulate sensor, mounts on the exhaust system after the DPF filter. It detects the amount of particulate matter in exhaust gas and sends real-time CAN bus data to the vehicle PCM. This data controls DPF active regeneration, monitors filter health and prevents excessive soot buildup that can clog the diesel particulate filter.

WJIECO’s GC3A-5L239-AA PM Sensor combines a high-temperature sensing probe and integrated control module in one sealed assembly. The complete unit includes the wiring harness and OEM-style connector, so there is no need to source separate parts for installation.

Compatible Vehicles for WJIECO GC3A-5L239-AA PM Sensor

Our GC3A-5L239-AA PM Sensor fits Ford Super Duty 6.7L Powerstroke diesel models:

• Ford F-250 Super Duty 6.7L Diesel
• Ford F-350 Super Duty 6.7L Diesel
• Ford F-450 Super Duty 6.7L Diesel
• Ford F-550 Super Duty 6.7L Diesel

Cross reference OEM part numbers: GC3A-5L239-AA, GC3Z-5L239A. Always verify your VIN and original part number before ordering the GC3A-5L239-AA PM Sensor.

Common Symptoms of Failed GC3A-5L239-AA PM Sensor

When your GC3A-5L239-AA PM Sensor fails, your Ford truck will show clear warning signs. These are the most frequent symptoms reported by diesel technicians and truck owners:

1. MIL / Check Engine Light illuminated on dashboard
2. DPF regeneration locked out; truck cannot run active regen
3. Engine power derate, reduced acceleration and limited speed
4. OBD fault codes: P24AE, P24B1, P24DA, P24C6, P24C7, U02A3
5. Frequent DPF filter clogging and premature ash buildup
6. Diagnostic scanner shows no communication or invalid PM sensor data

Many truck owners mistakenly replace the expensive DPF filter first. In many cases, the root problem is only a defective GC3A-5L239-AA PM Sensor. Replacing this sensor saves thousands in unnecessary DPF repair costs.

Why Choose WJIECO GC3A-5L239-AA PM Sensor?

WJIECO specializes in high-quality diesel exhaust sensors for North American diesel pickup and commercial trucks. Our GC3A-5L239-AA PM Sensor is engineered to meet or exceed OEM performance standards.

• 1:1 OEM Match: Fully interchangeable with original GC3A-5L239-AA PM Sensor, plug-and-play fitment
• Rugged construction: Heat-resistant probe, waterproof sealed electronics, corrosion-resistant wiring harness built for harsh under-truck exhaust environments
• Pre-calibrated: Ready for installation, no extra programming required after simple reset
• Rigorous quality testing: Each WJIECO GC3A-5L239-AA PM Sensor passes temperature, vibration and signal testing before shipment
• Long service life: Resists soot contamination, exhaust heat and road debris damage
• Professional aftersales support: We provide fitment guidance and troubleshooting support for your GC3A-5L239-AA PM Sensor

Step-by-Step Installation Guide for GC3A-5L239-AA PM Sensor

Installing the WJIECO GC3A-5L239-AA PM Sensor can be completed by DIY mechanics or professional repair shops:

1. Ensure engine is fully cool before working near hot exhaust components. Disconnect vehicle battery.
2. Locate the GC3A-5L239-AA PM Sensor mounted on exhaust pipe after DPF, near frame rail control module.
3. Unplug the electrical connector, remove mounting bolts and carefully extract the old sensor probe from exhaust pipe.
4. Install new WJIECO GC3A-5L239-AA PM Sensor, torque mounting bolts to factory specification.
5. Reconnect wiring harness connector securely and reattach battery.
6. Use an OBD scanner to clear stored DTC fault codes. Test drive and confirm DPF regeneration functions normally.

Important tip: Inspect wiring harness and connector pins for corrosion or chafing. Damaged wiring can cause the same U02A3 communication error even after installing a new GC3A-5L239-AA PM Sensor.

Frequently Asked Questions About GC3A-5L239-AA PM Sensor

What does GC3A-5L239-AA PM Sensor do?

GC3A-5L239-AA PM Sensor measures exhaust particulate soot levels and sends data to PCM to manage DPF regeneration and emissions control on Ford 6.7L Powerstroke diesel trucks.

Can I drive with a bad GC3A-5L239-AA PM Sensor?

Short distance driving is possible, but the truck will activate power derate and block DPF regen. Continued driving risks permanent DPF clogging and costly filter replacement. Replace your GC3A-5L239-AA PM Sensor promptly.

Is WJIECO GC3A-5L239-AA PM Sensor plug and play?

Yes. WJIECO GC3A-5L239-AA PM Sensor is direct plug-and-play replacement. No cutting wires or custom modifications are needed.

Does this GC3A-5L239-AA PM Sensor need programming?

No extra ECU programming is required. After installing the GC3A-5L239-AA PM Sensor, simply clear fault codes with an OBD scanner.

Final Notes

If your Ford 6.7L Super Duty is throwing PM sensor related codes, the WJIECO GC3A-5L239-AA PM Sensor is your cost-effective, reliable replacement solution. All WJIECO exhaust sensors undergo strict quality inspection to deliver stable PM readings and protect your DPF system. Order your GC3A-5L239-AA PM Sensor today and restore full engine power and DPF regeneration function.