Diesel Particulate Filter Pressure Sensor Circuit Malfunction
The P245E code indicates a problem with the electrical circuit of the diesel particulate filter (DPF) pressure sensor. This sensor monitors exhaust backpressure to determine DPF soot load. A circuit fault can be caused by wiring issues, a faulty sensor, or a problem with the engine control module (ECM). This can lead to incorrect DPF regeneration, reduced engine performance, and potential DPF damage.
01. Most Common Causes
- Faulty DPF pressure sensor
- Open or shorted wiring in sensor circuit
- Corroded or loose electrical connector
- Damaged DPF pressure sensor hose
- ECM software or hardware issue
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Frequent DPF regeneration cycles
- Poor fuel economy
- Black smoke from exhaust
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm P245E and check for other codes.
Step 2: Visually inspect the DPF pressure sensor, wiring, and connector for damage or corrosion.
Step 3: Test the sensor's voltage and resistance with a multimeter per manufacturer specs.
Step 4: Check the pressure hoses for blockages or leaks.
Step 5: If all else is fine, replace the DPF pressure sensor and clear the code.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can lead to DPF damage and reduced engine performance. Short trips to a repair shop are okay.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the sensor price and shop rates.