A Camshaft Profile Actuator A Control Circuit Low Bank 1

Where it lives

For P001B, the actuator sits on the circuit this code reports. The description of P001B puts it on bank 1.

Check these first

• A short to ground in the bank 1 actuator A control wire
• A failed bank 1 camshaft profile actuator A solenoid
• Contaminated or low engine oil starving the bank 1 phaser
• A chafed harness near the bank 1 camshaft cover
• A failed ECM driver pulling the bank 1 circuit low

What to do next

1. Inspect the bank 1 actuator A harness for chafing or a short to ground
2. Measure resistance across the bank 1 actuator A solenoid
3. Check engine oil level and condition
4. Unplug the bank 1 actuator A and watch for the low code to clear
5. Replace the bank 1 actuator A if the solenoid is shorted
6. Clear the code and retest

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