Diesel Particulate Filter Pressure Sensor Circuit Low
The P2460 code indicates that the Engine Control Module (ECM) has detected a voltage signal from the Diesel Particulate Filter (DPF) pressure sensor that is lower than the expected range. This sensor measures the pressure difference across the DPF to monitor soot loading. A low circuit condition typically points to a short to ground, open circuit, or a faulty sensor. This can lead to incorrect regeneration cycles, reduced engine performance, and potential DPF damage if not addressed.
01. Most Common Causes
- Faulty DPF pressure sensor
- Short to ground in sensor circuit
- Open circuit in sensor wiring or connector
- Corroded or damaged sensor connector
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Frequent or incomplete DPF regeneration
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Visually inspect the DPF pressure sensor and wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor signal voltage with a multimeter; compare to manufacturer specifications.
Step 4: Check for continuity and shorts in the sensor circuit between the sensor and ECM.
Step 5: If all wiring and connections are good, replace the DPF pressure sensor.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code as it can lead to incomplete regeneration and potential DPF clogging, which may cause more expensive repairs.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the vehicle and shop rates.