What Does P245E Mean?
The secondary diesel particulate filter differential pressure sensor circuit has an electrical fault. The ECM is not receiving a valid signal from the DPF pressure sensor B.
Common Causes
40%
Faulty DPF pressure sensor B
30%
Damaged wiring or connector to sensor
15%
Corroded sensor connector terminals
10%
Broken or pinched sensor hoses
5%
ECM fault in sensor circuit
Diagnostic Steps
1
Step 1: Inspect DPF pressure sensor B connector for corrosion, damage, or loose connection
2
Step 2: Check sensor supply voltage (typically 5V reference) at sensor connector
3
Step 3: Measure sensor signal voltage and compare to specifications
4
Step 4: Inspect pressure hoses from DPF to sensor for cracks, blockage, or disconnection
5
Step 5: Test sensor ground circuit for continuity to ECM
Estimated Repair Cost
$200 - $600
Parts + labor, varies by vehicle and location
The secondary diesel particulate filter differential pressure sensor circuit has an electrical fault. The ECM is not receiving a valid signal from the DPF pressure sensor B.
The most common cause of P245E (Diesel Particulate Filter Pressure Sensor "B" Circuit) is: Faulty DPF pressure sensor B
Typical repair costs for P245E range from $200 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but DPF regeneration may not function properly. Extended driving could result in excessive DPF clogging and potential engine derate.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P245E to identify the root cause.
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Quick Info
Category
Powertrain
System
Diesel Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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