The P2460: Diesel Particulate Filter Pressure Sensor ‘B’ Circuit Low code indicates that the voltage in the pressure sensor ‘B’ circuit for the diesel particulate filter (DPF) is lower than expected. This can affect the sensor’s ability to accurately read pressure, leading to improper DPF regeneration and potential clogging. Possible causes include a faulty sensor, issues with wiring, or connector problems.
P2460 – Quick Overview
Code | Information |
---|---|
Meaning | P2460: Diesel Particulate Filter Pressure Sensor ‘B’ Circuit Low |
Is it serious? | Moderate – low voltage can lead to incorrect pressure readings, preventing proper DPF regeneration, which can increase emissions and eventually clog the DPF. |
Possible causes | – Low voltage in the pressure sensor ‘B’ circuit – Faulty sensor – Wiring or connector issues |
How to diagnose? | – Measure voltage in the pressure sensor ‘B’ circuit – Inspect and test the sensor and wiring – Replace faulty components if needed |
P2460 Meaning
The P2460: Diesel Particulate Filter Pressure Sensor ‘B’ Circuit Low code means that there is insufficient voltage in the DPF pressure sensor ‘B’ circuit, potentially indicating an open or short circuit, degraded sensor, or loose connections. The pressure sensor monitors the differential pressure across the DPF to determine the amount of soot buildup and when regeneration is needed. If the voltage is too low, the sensor might not send accurate readings, preventing the system from properly initiating regeneration, which can lead to filter clogging and decreased engine performance.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to determine if there are any other related fault codes. Additional codes can provide context about the overall health of the DPF or related systems. | OBD-II Scanner |
Inspect the Pressure Sensor ‘B’ | Visually inspect the DPF pressure sensor ‘B’ for any signs of damage, such as cracks, corrosion, or poor connection, which may be causing low voltage readings. | Flashlight, Safety Gloves |
Measure Voltage in the Circuit | Use a multimeter to measure the voltage in the DPF pressure sensor ‘B’ circuit. Verify that the voltage matches the manufacturer’s specifications and is not abnormally low. | Multimeter |
Check Wiring and Connectors | Inspect all wiring and connectors connected to the pressure sensor ‘B’. Look for loose connections, frayed wires, corrosion, or other signs of damage that could cause low voltage. | Flashlight, Multimeter |
Test Sensor Output | Use a diagnostic tool to test the output of the pressure sensor under varying engine conditions. Compare readings against manufacturer specifications to determine if the sensor is faulty. | Diagnostic Tool, Multimeter |
Repair or Replace Damaged Wiring or Connectors | If issues are found with wiring or connectors, repair or replace them as necessary to ensure proper electrical flow to the sensor. | Wiring Repair Kit, Connector Tools |
Replace the Sensor if Faulty | If the sensor is not functioning correctly and producing low voltage, replace it to restore accurate pressure monitoring for the DPF system. | Replacement Sensor, Wrench Set |
Clear the Code and Test Drive | After completing the repairs, clear the P2460 code using an OBD-II scanner. Take the vehicle for a test drive while monitoring the DPF pressure readings to ensure correct voltage levels. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | Re-scan the vehicle after the test drive to ensure that the P2460 code has not returned. If the code persists, further diagnostics will be required to identify any underlying issues. | OBD-II Scanner |

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