Particulate Filter Pressure Sensor B Circuit Intermittent/Erratic

Where it lives

For P2462, the circuit described runs through the sensor. The description of P2462 reports a fault at the sensor.

Check these first

• A loose sensor B connector that drops signal on bumps
• A sensor B element with an erratic output
• Corrosion in the sensor B terminals
• A chafed sensor B harness rubbing on the chassis

What to do next

1. Read particulate filter pressure sensor B while wiggling the harness
2. Inspect the sensor B connector for loose or corroded pins
3. Check the sensor B harness for chafe points
4. Monitor sensor B output for a steady signal during a road test
5. Replace the particulate filter pressure sensor B if the erratic signal persists
6. Clear the code and retest

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