What Does P2464 Mean?
The ECM has detected abnormally low differential pressure across the DPF on Bank 2, indicating a potential leak in the exhaust system or failed DPF substrate. This means the filter is not creating the expected backpressure.
Common Causes
40%
DPF substrate failure or melted/broken filter core
30%
Exhaust leak before or at the DPF on Bank 2
15%
Disconnected or damaged pressure sensor hoses
10%
Faulty DPF differential pressure sensor reading incorrectly low
5%
DPF removed or hollowed out (tampering)
Diagnostic Steps
1
Step 1: Inspect exhaust system visually for obvious leaks, damage, or disconnected components on Bank 2
2
Step 2: Verify DPF pressure sensor hoses are properly connected and not damaged or leaking
3
Step 3: Compare differential pressure readings between banks if applicable; significant difference indicates Bank 2 issue
4
Step 4: Perform exhaust backpressure test at various RPM levels to verify actual restriction
5
Step 5: Inspect DPF internals with borescope if accessible, or replace DPF if substrate failure is confirmed
Estimated Repair Cost
$300 - $3,000
Parts + labor, varies by vehicle and location
The ECM has detected abnormally low differential pressure across the DPF on Bank 2, indicating a potential leak in the exhaust system or failed DPF substrate. This means the filter is not creating the expected backpressure.
The most common cause of P2464 (Diesel Particulate Filter Differential Pressure Too Low Bank 2) is: DPF substrate failure or melted/broken filter core
Typical repair costs for P2464 range from $300 to $3,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is generally safe to drive but will fail emissions testing. Failed DPF substrate may allow harmful particulates into the atmosphere and could indicate previous overheating events.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2464 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
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