P2464

Code

LAND ROVER P — Powertrain

Diesel particulate filter differential pressure also low (Bank 2)

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 23 EN: 21 RU: 16

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Faulty differential pressure (DP) sensor or sensor element (Bank 2)
Open or short in DP sensor wiring or poor connector connection
Blocked, collapsed or disconnected sensor vacuum/pressure hoses or ports
Exhaust leak downstream of upstream sensor or upstream of downstream sensor reducing measured differential
DPF removed, bypassed, or incorrectly installed
Exhaust flow abnormality (missing turbo boost, stuck EGR, intake leak) causing low pressure drop

Symptoms

Malfunction Indicator Lamp (MIL) illuminated
Reduced engine power or limp-home mode in some cases
Failed or inhibited DPF regeneration cycles
Possible increased noise from exhaust if leak present
Stored DTC(s) related to DPF, turbo, MAP or EGR systems

What to check

Read freeze frame and full DTC list; note conditions when code set (engine temp, load, speed)
Scan live data: monitor upstream and downstream DP sensor voltages/pressure values and compare against known-good bank or expected values
Compare pressure readings between Bank 1 and Bank 2 sensors under same conditions
Visually inspect DP sensor wiring, connectors and harness for damage, corrosion or disconnection
Inspect sensor vacuum/pressure hoses and ports for blockage, collapse, disconnection or incorrect routing
Visually inspect exhaust for leaks between pressure pick-up points (use smoke test or listen for leaks)

Signal parameters

Typical DP sensor output: ~0.5–4.5 V proportional to differential pressure (manufacturer-specific scaling)
At low soot load / clean DPF differential pressure often near 0–50 mbar (low value) — expected values vary with engine/load
Significant difference between upstream and downstream pressures during acceleration/cruise is normal; near-zero differential under load is abnormal
Compare Bank 2 sensor voltage and mbar to Bank 1 under identical conditions

Diagnostic algorithm

Retrieve and record all DTCs and freeze frame data. Verify P2464 is current and note operating conditions when it set.
Using a scanner, view live DP sensor voltages/pressure for Bank 2 at key conditions: key on engine off, idle, steady cruise, and during acceleration. Compare to Bank 1 and to expected ranges.
Visually inspect DP sensor connector, pins and wiring for corrosion, damage or loose terminal. Wiggle harness while observing live data for intermittent changes.
Inspect sensor hoses/ports for blockage, kinks, disconnection or collapsing. Remove and blow through lines; clear any soot or carbon deposits from ports.
Perform a smoke test of intake/exhaust to locate leaks between the upstream and downstream pressure pick-ups and at DPF flanges or joints.
If wiring/signals suspect, measure sensor supply, ground and signal voltages at the connector; compare to spec. Check continuity and resistance of harness.
If an identical sensor is available, swap Bank 1 and Bank 2 DP sensors (if practical) to see if the code follows the sensor. Do not swap if sensors are bank-specific without verification.
Inspect DPF condition (visual/borescope) and confirm DPF is present and correctly installed. Consider forced regeneration and re-check differential pressures before and after.
Repair identified faults (hose/wiring/exhaust leaks/sensor replacement). Clear codes and perform road/regen tests to verify the fault does not return.
If no mechanical/electrical fault found, check for PCM software updates and consult manufacturer-specific procedures.

Likely causes

DP sensor electrical fault or failed sensor
Leaking or disconnected DP sensor hose or port
Exhaust leak between pressure pickup points (upstream/downstream)
Incorrect/removed DPF or backpressure path altered

Fault status

⚠️ Status

DPF differential pressure (Bank 2) reading lower than expected. Indicates an unexpectedly low pressure drop across the DPF on bank 2 — possible sensor, hose, wiring, exhaust leak, or altered exhaust flow.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

Your experience will help others

+100 karma for a short comment :)

Was this AI description helpful?

Your feedback helps improve AI descriptions.

👍 Like 0 👎 Dislike 0

Send to email

P2464 — Diesel particulate filter differential pressure also low (Bank 2)