Code
P2460
Generic
P — Powertrain
Particulate Filter Pressure Sensor B Circuit Low
Views:
UK: 12
EN: 33
RU: 17
AI status
Completed
Completed
100%
Causes
- Short to ground on the pressure sensor B signal wire
- Open or high-resistance connection in signal, reference, or ground circuits
- Failed particulate filter pressure sensor (sensor B)
- Corroded or loose connector or pins at sensor or ECM
- Damaged wiring harness (chafing, rodent damage, heat)
- PCM/ECM internal fault or poor connector termination
Symptoms
- Malfunction Indicator Lamp (MIL) / check engine light illuminated
- Reduced engine performance or forced limp mode in some vehicles
- Frequent or failed DPF regen cycles
- Increased fuel consumption or visible smoke during regen
- Stored DPF-related trouble codes alongside P2460
What to check
- Read freeze frame and pending codes; check for related DPF codes
- Perform visual inspection of sensor, wiring harness, and connector for damage or corrosion
- Backprobe sensor connector to measure signal voltage, reference voltage, and ground
- Check continuity and resistance between sensor connector and ECM connector
- Wiggle test wiring while monitoring signal to check for intermittent opens/shorts
- Inspect DPF mounting and nearby heat damage to wiring
Signal parameters
- Typical reference supply: ~5.0 V (some systems 3.3 V) at sensor reference terminal
- Expected signal range: ~0.5–4.5 V (varies by sensor type and pressure range)
- Low-circuit condition: signal near 0.0–0.5 V or fixed below normal operating range
- Normal operating: signal varies with pressure; at key-on/engine-off some sensors output a baseline voltage
Diagnostic algorithm
- Retrieve codes and freeze-frame data; note operating conditions when fault set.
- Visually inspect sensor, connector, and harness for damage, corrosion, or melted insulation.
- With ignition ON (engine OFF), backprobe the connector: verify reference voltage (≈5 V or 3.3 V), sensor ground continuity to chassis, and signal voltage. Report any missing supply or ground.
- If reference voltage is present but signal is very low (
- Check continuity between sensor connector pins and ECM pins; look for open or high-resistance circuits. Repair any damaged wiring or poor connectors.
- With connector connected, start engine and observe signal voltage while inducing a pressure change (if safe) or during a short drive. If signal never changes or stays low, suspect sensor or wiring short.
- Perform a wiggle test along harness while monitoring live data for intermittent faults.
- If wiring and reference/ground are good but signal remains out of range, replace the particulate filter pressure sensor B.
- After repair, clear codes, perform required relearn or DPF regeneration procedures per manufacturer, and road test to confirm the fault does not return.
- If problem persists after sensor/wiring replacement, consider ECM/PCM input circuit failure and consult manufacturer guidance.
Likely causes
- Wiring short to ground on the sensor signal or reference circuit
- Bad sensor (internal short or failed electronics)
- Poor ground at sensor or control module
- Connector corrosion or pin pushed out
- Aftermarket DPF hardware or recent service left a connector disconnected
Fault status
Status
P2460 — Particulate Filter Pressure Sensor B Circuit Low: low or no signal from DPF pressure sensor B detected (possible short to ground, open, bad sensor, or poor reference/ground).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P2460
LAND ROVER
P — Powertrain
Diesel particulate filter pressure sensor circuit B - Low
Views:
UK: 5
EN: 22
RU: 7
AI status
Completed
Completed
100%
Causes
- Short to ground on the pressure sensor B signal wire
- Open or high-resistance connection in signal, reference, or ground circuits
- Failed particulate filter pressure sensor (sensor B)
- Corroded or loose connector or pins at sensor or ECM
- Damaged wiring harness (chafing, rodent damage, heat)
- PCM/ECM internal fault or poor connector termination
Symptoms
- Malfunction Indicator Lamp (MIL) / check engine light illuminated
- Reduced engine performance or forced limp mode in some vehicles
- Frequent or failed DPF regen cycles
- Increased fuel consumption or visible smoke during regen
- Stored DPF-related trouble codes alongside P2460
What to check
- Read freeze frame and pending codes; check for related DPF codes
- Perform visual inspection of sensor, wiring harness, and connector for damage or corrosion
- Backprobe sensor connector to measure signal voltage, reference voltage, and ground
- Check continuity and resistance between sensor connector and ECM connector
- Wiggle test wiring while monitoring signal to check for intermittent opens/shorts
- Inspect DPF mounting and nearby heat damage to wiring
Signal parameters
- Typical reference supply: ~5.0 V (some systems 3.3 V) at sensor reference terminal
- Expected signal range: ~0.5–4.5 V (varies by sensor type and pressure range)
- Low-circuit condition: signal near 0.0–0.5 V or fixed below normal operating range
- Normal operating: signal varies with pressure; at key-on/engine-off some sensors output a baseline voltage
Diagnostic algorithm
- Retrieve codes and freeze-frame data; note operating conditions when fault set.
- Visually inspect sensor, connector, and harness for damage, corrosion, or melted insulation.
- With ignition ON (engine OFF), backprobe the connector: verify reference voltage (≈5 V or 3.3 V), sensor ground continuity to chassis, and signal voltage. Report any missing supply or ground.
- If reference voltage is present but signal is very low (
- Check continuity between sensor connector pins and ECM pins; look for open or high-resistance circuits. Repair any damaged wiring or poor connectors.
- With connector connected, start engine and observe signal voltage while inducing a pressure change (if safe) or during a short drive. If signal never changes or stays low, suspect sensor or wiring short.
- Perform a wiggle test along harness while monitoring live data for intermittent faults.
- If wiring and reference/ground are good but signal remains out of range, replace the particulate filter pressure sensor B.
- After repair, clear codes, perform required relearn or DPF regeneration procedures per manufacturer, and road test to confirm the fault does not return.
- If problem persists after sensor/wiring replacement, consider ECM/PCM input circuit failure and consult manufacturer guidance.
Likely causes
- Wiring short to ground on the sensor signal or reference circuit
- Bad sensor (internal short or failed electronics)
- Poor ground at sensor or control module
- Connector corrosion or pin pushed out
- Aftermarket DPF hardware or recent service left a connector disconnected
Fault status
Status
P2460 — Particulate Filter Pressure Sensor B Circuit Low: low or no signal from DPF pressure sensor B detected (possible short to ground, open, bad sensor, or poor reference/ground).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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