Exhaust Pressure Sensor B Circuit Intermittent/Erratic

Where it lives

For P047E, the circuit described runs through the sensor. The description of P047E reports a fault at the sensor.

Check these first

• An intermittent exhaust pressure sensor B
• A loose sensor B connector
• A chafed sensor B wire
• Moisture in the sensor B connector
• A pressure tube that partly blocks and clears

What to do next

1. Wiggle test the sensor B harness while watching the signal
2. Inspect the sensor B connector for moisture
3. Check the sensor B wire for chafing
4. Check the pressure tube for debris
5. Replace sensor B if the dropouts continue
6. Clear the code and retest

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