Crankshaft Position Sensor A Circuit High

Where it lives

For P0338, the circuit described runs through the sensor. The description of P0338 reports a fault at the sensor.

Check these first

• A faulty crank position sensor A
• A short to power on the sensor A circuit
• Corrosion or water at the sensor A connector
• Incorrect sensor A installation or gap
• A faulty ECM input

What to do next

1. Read crank position sensor A on a scan tool
2. Check the sensor A circuit for a short to power
3. Inspect the sensor A connector for water or corrosion
4. Verify the sensor A installation and gap
5. Replace crank position sensor A if the signal stays high
6. Clear the code and retest

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